Is that just the one game you can't connect to? Then please uninstall and reinstall and update and clear the cache. You may lose your boosters when uninstalling.
Hi @Chazzy We warmly welcome you to the Friendly King Community's Candy Crush Saga forum.😊
We are sorry for your problem, but I will definitely need a screenshot to understand your problem. For instructions on how to take a screenshot please visit here.