Since other thread with useful information got closed by a uncaring customer service, I’ll link everything here. maybe there is still a few caring customer service representive left in blizzard idk.
Current login problem with blizzard servers (crappy Amazon servers):
Old similar problem we had in 8.3 during BFA:
FYI: this is a 1000000000% problem with login servers, mostly affecting ppl from middle east. some reports of EU as well but mostly from middle east. there are lots of MRT results in the current Shadowlands problem thread, if you want to help, start there. if you don’t want to help, insert your copy/paste text (reset UI,reset modem, blabla…) here.