That’s the catch: you either buy next month’s, get the instant unlocks whenever you pay, and the reveals the first Friday, next month, or you don’t and have missed the chance. After paying, you can unsubscribe right away, or pause for a month.
It’s kind of a pig in a poke thing, except the Hamble piglet you get every month, is actually a juicy little bundle of games.
I have a little write-up summing up the basics here.
If you do decide to subscribe, either for September or another month, please consider using my referral link, which costs absolutely nothing, nor it involves any kind of annoyance, and nets me a few store credit monies. Thank you!