https://bugs.winehq.org/show_bug.cgi?id=36423
--- Comment #20 from Someone scrimekiler@yahoo.fr --- This is another bug. Please fill a new bug (and by the way I'm also affected by it since yesterday)
(In reply to parsley.kyle from comment #19)
So the problem I was having was it was asking me to log in to access the champion tab of store. After logging in it would not work, and trying to access it after logging in didn't work. I resolved this problem by just opening one of the skins that was on the front page of the home page. It would correctly open the store which then let me open the champion tab.