You mentioned this was happening as of a few months ago, so that eliminates it being something from the most recent update.
- Have you added any mods or Custom Content that you can recall a few months ago that might have affected this? (Mods can interfere with regular gameplay, especially if they are not updated to also work with the most current updates; it is the user's responsibility to make sure their mods are up-to-date.)
- Is this happening only with one Sim, or multiple Sims? (Sometimes it can come down to a single Sim rather than the game as a whole; it's worth testing as the Sim may need to be looked at rather than the whole game.)
- Have you attempted a Repair of the game via Origin? (Usually you want to do this if the issue is across the whole game.)
EDIT: I feel silly; also make sure you go into Game Options, select the "Get Famous" tab, and make sure the "Sims Begin Opted Out of Fame" option is not selected.
- B