Lending Bao is a consumer loan product launched by Alipay, and users can spend on Alipay according to their credit limit. Before the monthly repayment date, the system will automatically deduct the repayment amount. If the user fails to repay the loan, it will have a bad influence on the credit rating, and then affect the loan amount.

In response to your question, the sudden disappearance of the loan line may be due to the following circumstances:

1. Overdue repayment: you are required to repay on time every month. If repayment is made after the repayment date, it is counted as overdue repayment. Overdue repayment will have a negative impact on the credit rating, and then affect the loan amount.

2. Decline in credit rating: If your credit rating declines during the loan period, it will affect your loan amount. You can check your credit rating through the Credit Information Center on Alipay.

3. Other negative information: For those who are not very clear about their online loan big data, they can check their online loan big data information through "balloon check". This database cooperates with more than 2,000 online lending platforms, so the queried data is very accurate. If you have bad information on other online lending platforms, it will also affect the loan amount.

If you are sure that you are not overdue, your credit rating has not declined, and there is no other negative information, I suggest you contact Alipay customer service for consultation.