If they automatically send you your boarding passes to your email or phone you need to go back into online check in as if starting afresh, if you’re looking for an upgrade offer. I did that for tomorrow’s flight to Madrid and got offered EUR89 which I thought was a good deal. Before the flight I have a layover longer than 2 hours in CDG Terminal F, so it will be nice having the lounge access. Priority Pass is a disaster in CDG if you’re flying AF. It’s a disaster anyway, with crappy lounges.