Problem with hextech and lobby in the client

1. I haven't got​ button to start search in any kinds of the queue/types of the game. Also, I don't see the icons of me or anybody of my party in the lobby. 2. One more problem, that happened at the same time, is that section of client "Loot" doesn't work too. These problems happened in the case of the new patch. And I tried to reinstall the client, but it didn't help. So, I cant play.
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