*** Email address is removed for privacy ***

It told me it will send a code to my other email account *** Email address is removed for privacy ***, however, I've tried it a number of times and still there's no code sent to my @hotmail.com account. What is the problem with it?

Urgently require the activation of the account back again since it is the account synced with my Microsoft phone, and I can't update any of my apps at all.