Many have had this issue i believe you need to contact Haypi directly
on Haypi dragons main screen of the game go to settings(top right hand corner) then scroll down to help and select suppport Then list the following: username server # and the problem
I had the same problem. I contacted support and they said that older models of the iPhone won't be able to handle multi-pvp. Sorry, but you're stuck with 1v1.
I had the same problem " support 1vs1 only " on my Itouch Gen2 . 1 more thing, since the last update, whenever i create a 1vs1 room, I've been kicked out of the room. WTH.........