Alibaba fish's SMS signature is illegal.

You tied a lot of things yourself, so there's nothing you can do. If it is impossible, it was someone else's mobile phone number before. Some things are tied, and the new mobile phone number can only be used after being idle for a while. If it doesn't work, cancel it. It's better to use the new number than the old one. If you didn't handle it properly, just pretend you didn't see it. It's really impossible to find a telecom company to check for you.