> ## Documentation Index
> Fetch the complete documentation index at: https://docs.yelinai.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Payment Methods

> Supported payment methods, recharge process, and refund policy

## Supported Payment Methods

Laozhang API supports multiple convenient payment methods to meet different user needs.

### Online Payment

## Credit/Debit Card

* Visa
* Mastercard
* American Express
* Discover

**Processing Time**: Instant\
**Fees**: None

## PayPal

* Support global PayPal accounts
* Support PayPal balance and linked cards

**Processing Time**: Instant\
**Fees**: None

## Alipay

* Domestic Alipay accounts
* Scanning code payment

**Processing Time**: Instant\
**Fees**: None

## WeChat Pay

* WeChat scanning code payment
* Domestic users only

**Processing Time**: Instant\
**Fees**: None

### Cryptocurrency Payment

**Cryptocurrency Payment**Support mainstream cryptocurrency payment:

* Bitcoin (BTC)
* Ethereum (ETH)
* USDT (TRC20, ERC20)

**Processing Time**: 10-30 minutes (waiting for blockchain confirmation)\
**Fees**: Network gas fees (user pays)

### Bank Transfer

For large recharges (over \$1000):

1

Contact Support

Email: \[billing\@YeLIn AI]\(mailto:billing\@YeLIn AI)
Provide recharge amount and company information

2

Get Account Information

Receive our bank account information

3

Complete Transfer

Complete bank transfer

4

Submit Proof

Submit transfer receipt for verification

5

Balance Update

Balance updated within 1-3 business days

## Recharge Process

### Standard Recharge

1

Log in to Console

Visit [Laozhang API Console](https://api.yelinai.com) and log in

2

Select Recharge Amount

Click “Recharge” button and select amount**Recommended Amounts:**

* \$10 - Small test
* \$50 - Daily use
* \$100 - Regular use (10% bonus)
* \$500+ - Enterprise use (custom discount)

3

Choose Payment Method

Select your payment method

4

Complete Payment

Follow payment flow to complete

5

Confirm Receipt

Balance typically updates immediately
Check “Billing History” for confirmation

### Auto-Recharge

Set up auto-recharge to avoid service interruption:

1

Enable Auto-Recharge

Go to “Account Settings” > “Auto-Recharge”

2

Set Conditions

Configure auto-recharge rules:

* **Trigger Condition**: Balance below \$10
* **Recharge Amount**: \$50
* **Payment Method**: Credit card auto-deduct

3

Save Configuration

Save settings and wait for confirmation

**Auto-Recharge Benefits**

* ✅ Never interrupt service
* ✅ No manual operations needed
* ✅ Enjoy recharge bonuses
* ✅ Can cancel anytime

## Pricing and Bonuses

### Recharge Bonus

Enjoy bonuses for larger recharges:

| Recharge Amount | Bonus Ratio | Actual Received       | Equivalent Discount |
| --------------- | ----------- | --------------------- | ------------------- |
| 10−10-10−49     | 0%          | 10−10-10−49           | None                |
| 50−50-50−99     | 5%          | 52.5−52.5-52.5−103.95 | 95% off             |
| 100−100-100−499 | 10%         | 110−110-110−548.9     | 91% off             |
| 500−500-500−999 | 15%         | 575−575-575−1148.85   | 87% off             |
| \$1000+         | Custom      | Contact us            | Up to 20% off       |

**New User Special**First recharge gets additional 10% bonus!Example: First recharge 100,get100, get 100,get110 + 10=10 = 10=120

### Volume Discount

For high-volume users, we offer custom volume discount plans:

* **Monthly usage \$1000+**: 5% additional discount
* **Monthly usage \$5000+**: 10% additional discount
* **Monthly usage \$10000+**: 15% additional discount
* **Enterprise custom**: Contact \[sales\@YeLIn AI]\(mailto:sales\@YeLIn AI)

## Invoice and Receipt

### Request Invoice

1

Fill Invoice Information

Go to “Billing History” > “Request Invoice”
Fill in:

* Company name
* Tax ID
* Address and phone
* Bank account information

2

Select Billing Period

Choose billing period requiring invoice

3

Submit Request

Submit invoice request

4

Receive Invoice

Receive electronic invoice within 3-5 business days
Paper invoice can be mailed (additional fees apply)

### Invoice Types

| Invoice Type                | Applicable Region  | Processing Time   | Notes                     |
| --------------------------- | ------------------ | ----------------- | ------------------------- |
| **Value-added Tax Invoice** | China              | 3-5 business days | Supports deduction        |
| **General Invoice**         | China              | 1-3 business days | Non-deductible            |
| **Receipt**                 | Globally           | Instant           | For recharge records      |
| **Corporate Invoice**       | Global enterprises | 5-7 business days | English or local language |

## Refund Policy

### Refund Conditions

Can request refund if:

**Refundable Cases**

* ✅ Unused balance (no API calls)
* ✅ Duplicate payment
* ✅ Mistaken recharge
* ✅ Service discontinued
* ✅ Account closed

**Non-refundable Cases**

* ❌ Partial refund of used balance
* ❌ Promotional bonuses
* ❌ Expired balance
* ❌ Violation account
* ❌ Over 90 days

### Refund Process

1

Submit Refund Request

Email: \[billing\@YeLIn AI]\(mailto:billing\@YeLIn AI)
Include:

* Account information
* Refund amount
* Refund reason
* Payment proof

2

Review Process

Financial team reviews within 3-5 business days

3

Approve Refund

If approved, initiate refund process

4

Receive Refund

Refund time varies by payment method:

* Credit card: 5-10 business days
* PayPal: 3-5 business days
* Alipay/WeChat: 1-3 business days
* Bank transfer: 5-15 business days

### Refund Fees

| Refund Amount | Processing Fee | Example                         |
| ------------- | -------------- | ------------------------------- |
| \< \$50       | \$2 fixed fee  | Refund 48for48 for 48for50      |
| 50−50-50−500  | 3% of amount   | Refund 97for97 for 97for100     |
| > \$500       | 2% of amount   | Refund 980for980 for 980for1000 |

**Free Refund Cases**

* Platform error
* Duplicate payment
* Service disruption
* Account closure

## Payment Security

### Security Measures

## PCI DSS Compliant

Payment processing fully compliant with PCI DSS standards

## Encrypted Transmission

All payment data transmitted via HTTPS/TLS 1.3 encryption

## No Card Info Storage

Do not store your credit card information

## Fraud Detection

Real-time monitoring of unusual transactions

### Payment Information Protection

**Our Commitment**

* ✅ Do not store complete card numbers
* ✅ Do not store CVV codes
* ✅ Use tokenization technology
* ✅ Third-party payment processors (Stripe, PayPal)
* ✅ Real-time fraud monitoring
* ✅ SMS/Email payment notifications

## Common Issues

Payment failed, what to do?

**Common Causes:**

1. **Insufficient Card Balance**
   * Check card available balance
   * Try another payment method
2. **Card Expired or Invalid**
   * Verify card expiration date
   * Check card number accuracy
3. **Bank Security Block**
   * Contact issuing bank
   * Verify transaction is legitimate
4. **Network Issues**
   * Refresh page and retry
   * Change browser or network

**Solutions:**

```
1. Verify payment information accuracy
2. Try another payment method
3. Contact customer support if still failing
4. Provide transaction ID for investigation
```

Recharge not arrived?

**Check Steps:**

1. **Confirm Payment Success**
   * Check bank/payment app deduction record
   * Verify payment confirmation email
2. **Check Account Balance**
   * Refresh console page
   * Check “Billing History”
3. **View Processing Status**
   * Some payments require processing time
   * Cryptocurrency payments require blockchain confirmation

**Processing Times:**

* Credit card: Instant
* PayPal: Instant
* Alipay/WeChat: Instant
* Cryptocurrency: 10-30 minutes
* Bank transfer: 1-3 business days

**If Still Not Arrived:**
Contact support: \[billing\@YeLIn AI]\(mailto:billing\@YeLIn AI)
Provide:

* Payment method
* Payment amount
* Payment time
* Transaction ID

Can I split payments?

\*\*Split Payment Policy:\*\*Currently do not support split payments, but offer alternatives:

1. **Installment Payment**
   * Use credit card installment (consult issuing bank)
   * Platform does not charge extra fees
2. **Batch Recharge**
   * Recharge multiple times
   * Each recharge independent
3. **Corporate Monthly Settlement**
   * Enterprise users can apply for monthly settlement
   * Contact: \[sales\@YeLIn AI]\(mailto:sales\@YeLIn AI)

Can I change payment method?

**Change Payment Method:**

1. **For Completed Payments**
   * Cannot change payment method
   * If refund needed, follow refund process
2. **For Future Recharges**
   * Can freely choose any supported payment method
   * No need to set default method
3. **For Auto-Recharge**
   * Can change auto-recharge payment method in settings
   * Takes effect on next recharge

How to view billing history?

**View Billing Records:**

1

Log in to Console

Visit [Console](https://api.yelinai.com)

2

Enter Billing History

Click “Billing” > “Billing History”

3

View Details

View all recharge, usage, refund records

4

Export Records

Can export to CSV or PDF format

**Record Contents:**

* Date and time
* Transaction type (recharge/usage/refund)
* Amount
* Payment method
* Balance
* Transaction ID

## Enterprise Solutions

### Corporate Account

Provide specialized services for enterprise users:

## Monthly Settlement

* No need for advance recharge
* Generate bill at month end
* Support corporate transfer payment

## Volume Discount

* Custom pricing based on usage
* Up to 20% discount
* Long-term contract additional discounts

## Dedicated Support

* Dedicated account manager
* 24/7 technical support
* Priority problem resolution

## Custom Invoice

* Support various invoice types
* Custom billing cycles
* Detailed usage breakdown

### Apply for Corporate Account

1

Contact Sales Team

Email: \[sales\@YeLIn AI]\(mailto:sales\@YeLIn AI)
Provide: Company name, estimated monthly usage, business type

2

Submit Materials

Provide:

* Business license
* Tax registration certificate
* Legal representative ID
* Corporate email

3

Review and Approval

Business team reviews within 3-5 business days

4

Sign Contract

Sign service contract, clarify terms

5

Account Setup

Configure corporate account, enjoy exclusive services

## Contact Support

If questions about payment:

* **Email**: \[billing\@YeLIn AI]\(mailto:billing\@YeLIn AI)
* **Customer Service Phone**: +86 400-xxx-xxxx
* **Work Hours**: Monday-Friday 9:00-18:00 (UTC+8)
* **Online Support**: Click chat icon in console

## Related Resources

* [Pricing Description](/pricing) - View detailed pricing
* [Insufficient Balance](/faq/balance-insufficient) - Handle balance issues
* [Token Management](/faq/token-management) - Manage API tokens
* [Terms of Service](https://api.yelinai.com/terms) - View service terms