Sometimes the game still freezes in the first round versus AI in PVP and you need to refresh the game and therefore lose rating.
Opponent started and used two action points instead of one. if I wanted to play a card, i just got the description screen of that monster.
If you want to investigate, it happened today, 24.10 7:45 UTC+1 on Kong, screenshot attached below
https://imgur.com/a/y4F88