Unable to sign in via Apple ID on sign.expo.dev / third-party tools - "Apple's servers are congested" loops indefinitely

I'm trying to generate a development provisioning profile for testing a React Native (Expo) app on my personal iPhone, using sign.expo.dev (which uses Apple ID authentication to provision a device for free/ad-hoc development).

Symptom: When signing in with my Apple ID on sign.expo.dev, the page repeatedly shows "Apple's servers are congested. Automatically retrying" and never completes, even after many retries ("Attempt 20+"). This happens consistently over several days, on both iPhone Safari and desktop Chrome/Edge.

What I've already verified:

  • Regular sign-in at appleid.apple.com works normally
  • Sign-in at developer.apple.com/account also works normally, with no pending agreements (I already reviewed and accepted the latest Developer Program License Agreement)
  • Apple System Status and Apple Developer System Status both show all services as operating normally
  • The issue persists across multiple devices/browsers and after clearing Safari data

Question: Is this a known issue with the Apple ID authentication flow used by third-party provisioning tools (possibly related to the Olympus session/config API)? Is there a known workaround, or an expected resolution timeframe?

Any guidance would be appreciated. Thank you.

Unable to sign in via Apple ID on sign.expo.dev / third-party tools - "Apple's servers are congested" loops indefinitely
 
 
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