In-App Purchases detaching from app version after submission (auto-renewable subscriptions)

Hi,

I’m having an issue where my auto-renewable subscriptions keep detaching from my app version after I submit the build in App Store Connect.

Details:

• App ID: com.growthsync.app
• Platform: iOS (Capacitor build)
• Using auto-renewable subscriptions

What’s happening:

• I attach all subscriptions to the app version under “In-App Purchases”
• Everything looks correct before submission
• After submitting, the subscriptions become detached or require localisation to be re-entered again
• This happens every time I resubmit

Additional issue:

• Subscriptions are not working in TestFlight either
• It feels like they are not properly linked to the binary

What I’ve already checked:

• Product IDs match exactly in code and App Store Connect
• Subscriptions are in the correct group
• All localisation fields are filled within character limits
• Products show as “Ready to Submit” before attaching
• I reattach them before every submission

Questions:

1. Why would subscriptions repeatedly detach after submission?
2. Is this a known App Store Connect issue?
3. Is there a specific order required when creating, localising, and attaching subscriptions?
4. Could this be related to the binary not recognising the products?

This is currently blocking release so any help would be appreciated.

Thanks.