Hello @norah alfadhli ,
other users describe the same problem. To fix the problem, I recommend you to open a ticket at Microsoft Support.
You can get more information from already existing entries:
- https://answers.microsoft.com/en-us/msoffice/forum/all/phone-number-did-not-pass-security-checks/b1812e16-afce-4ff2-9ea1-97a552906eb9?page=1
- https://learn.microsoft.com/en-us/answers/questions/1125235/phone-number-did-not-pass-security-checks-microsof?page=1#answers
If this is helpful, please accept the answer. Thank you.