Try going under your settings on your device and clear out cookies/data.
Go to settings and turn your wifi off then back on.
Make sure you force close out of all the apps running in the background.
To force close you games, means you are closing out the game from running in the background.
On iphone, ipad, etc. ( you are not deleting the game and redownloading it)
Click you home button twice, your icons will show up at the bottom
[IMG]https://t3.gstatic.com/images?q=tbn:ANd9GcQQx33DWgZVWPenwP1h0tp***PKRBxsz yWFKkDmOxwXrqLhb7dADwnKnLPx[/IMG]Then you hit the red minus sign for the apps you want to close out. you can scroll to find more.
You are not deleting the apps just closing them out. When you have app run in the background, it takes memory and slows up the games.
You can also try syncing your device with itunes. This sometimes can resolve issues.