Bought a 3 month Ultimate off Amazon... can't access Game Pass

I entered the long code off the Amazon page directly onto my Xbox, said it was for 3 months of Ultimate. Confirmed.

Can't play any Game Pass game, want to play Lies of P. They all have a triangle in their squares on the Dashboard. When I press on them it says "To play this, you'll need to buy it".

My Ultimate literally ran out this afternoon, should I just wait until tomorrow to try it again. There is no refund option on Amazon for digital purchases... or help.

Kind of got my money's worth with Starfield and was playing Lies of P earlier today, really liked it.