I cant log in on my account because i dont the the same number anymore

[Bob242424]

cant login on my o2 app 

[Enlli]

I'm afraid you will need to talk to O2

Guide: How to find help & contact O2 

[pgn]

Can you get into MyO2 using a browser (using a private or incognito tab in the browser may help): https://accounts.o2.co.uk/signin

Failing that, a call to O2 will be needed - have a second e-mail address for yourself handy, sometimes that can speed things up.

Guide: How to find help & contact O2 has the ways to reach O2, @Bob242424 - good luck!