Hello @cthidell! Many players lost all special events in Candy Crush Friends Saga as a result of the most recent update to the game. Management is aware of this issue and has provided an update HERE (tap hyperlink to that announcement).
Hi @cthidell please make sure you are using the latest version of the game. It is also very important that you have a strong and stable internet connection.
The Bubblegum Troll Event is currently available for 3 more days.