If you discovered a bug, please describe it in this forum.
Please always include the game number and server.
It's in green in the chat when the game starts, e.g.
"Joining game #62 on frankfurt-test."
If the bug is about the interface, please also include what browser you're using, what computer system, and depending on the nature of the bug maybe a screenshot can help. We don't need this information when it's about cards, card interactions or the game log.