While the 10-user concurrent limit on unpublished Open Cloud apps is by design, it inadvertently prevents Roblox’s own review-system service account from signing in once that ceiling is reached. Since the review request flow requires the service account to authenticate against the app, hitting 10 active users locks out that account—so any attempt to request review is immediately declined with generic errors (e.g. “App cannot be reviewed (entry link does not exist)” or “Sign up flow is broken”), rather than simply bypassing the limit for Roblox’s account(s).
Steps to Reproduce
- Create an Open Cloud App in Roblox Create; leave it Unpublished.
- Invoke the app concurrently from 10 distinct users. All 10 succeed.
- Observe that any additional client receives a 429 ratelimit response.
- Without closing any of the 10 sessions, go to the app’s settings and click Request Review (Publish).
- The review fails because the service account cannot sign in to the app while the 10-user cap is in effect.