Tried it on my third account too and now the same just cant log in, too big of coincidence that this happens right after redeeming this code. Even if its on our side than that mean we somehow redeem the code wrong way or something?
Tried restarting the game, repair, restart pc, reboot my router, tried on my notebook, also with mobile data but nothing worked. Now friend also cant log in. Like I said to big of coincidence. Hope its code then at least we know where could be the problem.