I have the same problem. "Connexion to the server impossible". I try to restart my phone and app but same result.
I don't want to uninstall/install the app because I was beating my solo record lol
It's just ok today! (I tried again yesterday). Everything returned back to normal... Strange! I think it was intentional somehow...
As I said in my last post, I was on my way to beat my own personal record. I think my opponent found a way to disturb my service (game? phone?) so he can kick me out because I didn't play my turn!
I join some screenshots.
The guy was good at the game with a scrabble quite soon. But I had luck with the letters and board. Enough to * him off!