Oct 13, 2021, 18:0010/13/21
Seems like some large delay came in communication with server. Like ca. 10 seconds waiting time after champ tier increase in tavern, before starting a batttle, after finishing a battle, etc...
I had also similar problem with getting award from clan chest (75 energy) 1 hour ago - clicked on it, got a pause, closed a client, restarted, similar message with "Continue"/"Support" and energy was lost...
P.S. Seems to be a problem of Windows 10 client. Android client works as before (no delays...)