Strange problem with Dice World/Twitter

Hello all,
I am having a strange issue with my Dice World/Twitter account. On my 5S when I won a game on Dice World I could tweet my win to Twitter. When I got my 6 Plus this feature no longer works for me. When I try to tweet my win from Dice World it says, Connection to Twitter has failed. Well I decided that the 6 Plus was just too big for me, so I took it back and ordered the iPhone 6. My 5S was turned on while I waited for my iPhone 6 to come in. Back on my 5S I was again able to tweet my wins from Dice World. I didn't change any settings any ware. I got my iPhone 6 now, and I am having the same problem again. On my iPhone 6 I can't tweet from Dice world my game wins. It says, Connection to Twitter has failed. I don't see any ware to disconnect my Twitter account from Dice World, so I can try re adding it. Does anyone know what might be going on here, and how I can fix it? Any help with this will be very much appreciated!