Authorization failed

I open SC2.
Automatic log in → authorization
Authorization window disappears and “Connection to Blizzard server” appears.
Authorization appears on top of connection window.
Both windows close leaving me on log in screen
Change region to EU (i always play EU).
Log in using correct mail and password.
connection, authorization, I am back to log in screen.

What i tried:
Restarted PC.
Cleared blzzard cache
Scan and restored SC2
Allowed it to download a few more percent.
Used Ccleaner.

Result won’t change.
What do?

Problem started after connection to internet was lost while i was logged in while in menus

UPD: It solved itself, but i am afraid for something to be in future

Hi. Same here. EU server is not responding. When I tried US or KR, it works perfectly. Apparently it is EU server problem.

except my friend somehow plays

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