Cannot start any game after patch

[Joachim-22234]

They responded in this thread. You just have to scroll up a little.

Also this problem is part of the Known Issues now so they are working on it.

@Vyraneer

[Hearthstone] We’re investigating reports of connectivity issues; affected players might also see the shop locked, and/or the Hearthstone mode button unclickable. Other reported symptoms are inability to click Battlegrounds buttons after entering the game mode.