hi everyone

I live in Bulgaria for more than 10 years - have a permanent EU residence card.
Registered on cex.io in 2017, User ID: up111959076

A couple years ago I've sold all of my crypto and left all my fiat money at cex.io account till 2024.
2 weeks ago I've decided to set some new orders and suddenly faced with an additional requests concerning my residence, source of deposites and so on.
Ok, I've sent them every necessary docs & infos.
Since then - no answer on email, neither on their live chat:

What do you think I should do to get back to control my account?