Reaper Rewards GUI - Disappeared

During my personal gameplay I managed to complete the first Reaper Rewards task ("Assistant to the Grim Reaper"). However, I left the lot to plant a community garden to help me complete the second task ("A Call Away"), but when I loaded back into my household, the GUI box disappeared and wouldn't allow me to complete "A Call Away." I've also been having A LOT of crashing issues during my regular game play. If I don't save every few minutes, the game crashes.