Click on the Battle.net app icon on windows, nothing happens but I can see it running in the background on task manager. Try to open a game without using the Battle.net app, it says downloading new files then gives me BLZBNTBTS0000005C error. Do the steps on there and try to reinstall/repair my battle.net and I get the same BLZBNTBTS0000005C error.
I’m getting that one too. Waiting to hear back from Blizz.