Board Game Arena

Table 710795531 (tournament)

Message appeared telling me to accept or decline. When I chose accept, it said I was already playing

Could do nothing so killed game and reloaded

Logged back in. Me and my opponent both showing in game, but trying to do anything, response of looking for players.

Found another response saying my opponent had just joined the game (next action after the above)

Back in the game - opponents turn to play

I have screenshots, how can I send to you screenshots in support of this, if needed?

Raise a bug. You can use something like imgur for your screenshots. That said, if it's not blocking you from playing, then it may not be entirely worth raising (not saying you didn't have a bug, more that it's not game-breaking, so other bugs would take higher priority).