You need to be a new Gamepass ultimate customer to use the $1 deal so do not use your 3 month codes first!Holy fuck! You might have just convinced me to get a Series X next month!
Edit: So can I do this for 2 years and then use the 3 3 months I just got for an extra year? Or hey, maybe I'll go for 3 years and then use the codes I got today lol. Damn!