Thank you to you all for your readiness to help me. I never thought that here I could find a lot of people that will actually try to help you.
Update: I received a reply from CEX account here telling me that I have to wait for my queue since there are a lot of requests especially during these times since everybody is into it.
I still cannot access the account but I hope my turn will come soon.
I will update the thread often so I anyone how will have the same issue as me, should definitely find this helpful.
For sure this topic has convinced me to be more active on the forum and spread my knowledge here.
This article might help you ]
Cex.io two factor authentication 2fa trouble shootingGive some tries to solve your own problem while waiting for their response since support take time to answer maybe due to some load of works given to them so better spare some extra time to do it for yourself.