What is the reason why Alipay can't receive SMS when recharging?

(You can choose at most 2 answers) Comments on the interviewee: (optional, within 40 words)

Before finding out this problem, you must first find out whether your mobile phone number has been bound to other Alipay accounts of 1. Have you changed your mobile phone number before? Did you rebind your mobile phone number on Alipay? The first possibility is very small, because the system will automatically prompt you when you bind. If it exists, you should apply for cancellation of the original mobile phone number in the mobile phone service in Alipay in time. The next step is the same as the third possible solution. If the third possibility exists, that is, you rebind your mobile phone number on Alipay, then you should not think that everything will be fine. Next, you have to get the relevant bank (that is, the bank where you usually use Alipay cartoon or online banking) to apply for changing the mobile phone binding. Only after the application for change is successful can the fees and fees be charged normally. Because what you changed on the Internet was only Alipay's own, but the payment check code was sent by the bank, and their system still used your previous mobile phone number, so your new mobile phone number could not be received.