Why can't I open a game?

Depending on the error you are getting, this could be due to either a previous limit set of how much you can play or perhaps due to an incomplete round. 

If you don't have any limits on your account that could be the cause of the error, then the first you should try is clearing the cache/cooking from the device you are using. If this doesn't solve the issue, kindly try by using a different browser or device.