Welcome to Flyertalk Timecheck00
don't worry and relax !
The limit check-in time is strictly endorsed but in your case you will be already checked-in for your entire trip to PUF at SFO (you will be given the 2 BP SFO-CDG and CDG-PUF and your luggage will be tagged to PUF). You don't have to collect your luggage in CDG but only at your final destination (PUF).
So you have to pass immigration and to transfer to 2G.