Sims 4 game deleted

[choffart6]

I logged into my Sims 4 game that I have been playing on this PC for 276 hours of play. I click into it to discover it thinks I am a new player, giving me tutorials, and my world I have modified to play is gone, mods were moved, and nothing is how it was saved. I need help!

my game was there mere days ago when I added new CC. 

Thanks.