aoihrk20cyju The WWW and generic household photo is normal when the save doesn't have an active household. You can post here if you like:
Main Menu has www when no household is selected | EA Forums - 11951974
For the disappeared family, there are plenty of reasons it could happen, including certain mods. Do you play with mods, and if so, does it help to remove them? You may need to load a backup save:
https://sims4.crinrict.com/eng/2014/09/recover-backup-save-game/
Even if you've never used mods with this household, it's still worth trying to recover a backup save.