The problem is logging in to a microsoft account without vpn and creating a profile (nickname)

My friend lives in Kherson, an occupied territory with Crimean internet, and he can't play some games without vpn, he bought the game recently and can't log into his microsoft account through the minecraft launcher without vpn, and he has a problem creating a profile, asks him to write a nickname , writes a nickname, clicks done and an error occurred when creating a profile.