In themed arena, the "Failed to connect to the Cross-Server system. Refresh the game and try again" message appears after every other fight and I can no longer join.

If I use the mini client's Clear up system and Reparied (sic), I can join fights again, but I have to constantly run this. Also when I try to do normal arena, it says that I'm still in themed.

I perform the ipconfig /dnsflush command and the client behaves the same after every themed fight.