Similar symptoms on a recently enrolled Individual account.
Internal TestFlight install fails immediately on every build: "Try again later" and "The requested app is not available or doesn't exist" (both messages appear for the same build). Submitting to external Beta App Review returns 422 ENTITY_UNPROCESSABLE "Please try again later" with no subcode.
Builds are VALID and IN_BETA_TESTING, beta metadata is filled, agreements are active. An Ad Hoc build installs on the same iPhone.
Filed FB25350402 (install) and FB25350414 (beta review). Apple, please check beta eligibility/provisioning for affected accounts.
Topic:
App Store Distribution & Marketing
SubTopic:
TestFlight
Tags: