Squad battles and single player drafts

I have been trying to evo some of my players through squad battles and the game keeps disconnecting and kicking me from the game. 
some things has happened to me in single player offline draft mode too. I get one game in and sometimes two games and then it disconnects me. I have tested my connection and it’s fine. 
I don’t have any problems when I play any modes online.

please help. 
I’ve lost draft tokens and 15000 coins due to this issue.