Cant log in on account microsoft

to be honest, I was just trying to log into my account to change my nickname to the main

one, but when I tried to log into the main acc on the site as a WHOLE, I was stupidly prevented from doing so

I tried both vpn and proxy, and I even cleaned my browser history and did the same from my phone, and none of this helped me. At the same time, I can log into the same Lunar Client

and ask for help from the knowledgeable!
(im from russia if its needed)