In other words, after your repayment last month, you still have an extra 73.50 yuan, which is the extra money you paid. After spending this month, deduct 73.5 first. As for the available quota, it is only RMB183.90, which indicates that the pre-authorization of Alipay transaction is likely to be frozen, resulting in the freezing of the quota. Just call the customer service hotline and go to Bank of Communications to cancel.