When your credits hit zero, AI generation pauses until your billing date. You can still access existing projects, download finished content, prepare new storyboards, browse Image Studio options, and use Script Studio (unlimited on paid plans; 5 generations per day on the free trial).
If you need more before your next cycle, you have two options: upgrade to a higher plan (best long-term value) or purchase a one-time credit top-up.
The platform shows clear warnings as you approach your limit at 75%, 90%, and 100% so you are never caught off guard.