Cant log in my account

I cant log in my account. Every time the app says connectionproblems. I uninstall the battlenet, restart router, restart pc but nothing works. What can i do?

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Same here! Each time I start the app, i can load all of the news posts at main screen, but whenever i try to “Go online” I only get message with error code: BLZBNTBGS80000011 (2) . My connection didnt change at all. I made sure that everything is up to date, but still - nothing. I already visited blizzard EU twitter and Americas, too. Nothing seems to be happening that could cause this problem.