Instagram Insights connection missing from existing Meta app

Hello Meta Developer Community,

I’m troubleshooting an existing read-only Instagram analytics integration for a small business.

The Instagram professional account is linked to its Facebook Page and remains visible in the business portfolio. An existing Meta Business app previously accessed account-level Instagram Insights for a scheduled analytics collector. That collector worked through early August 2026.

The stored authorization later became invalid, and the collector began returning an invalid-session response. In Meta’s current developer/business interface, the linked Instagram account is visible in the business portfolio, but the existing app/connection is not available as a reauthorization option. The interface offers only ‘Add Instagram account’ or ‘Generate access token.’

I am deliberately not creating a second app, portfolio, Instagram account, or replacement authorization because I need to preserve the existing setup and avoid duplicate connections.

The app’s read-only purpose is to collect Instagram account-level Insights and compare them with GA4 website referrals from Instagram, UTM attribution, and Search Console data. The account is a professional account, and the app previously worked with this setup.

Can anyone explain:

1. Why a linked professional Instagram account would remain visible in the business portfolio but disappear from the existing app’s reauthorization/connection flow?

2. Whether there is a supported way to restore the existing app-to-account association without creating a new token path?

3. Whether this indicates a business portfolio access issue, app association issue, expired authorization, or a Meta-side defect?

4. Which current Meta Developer or Business settings should be checked first?

The app ID can be supplied privately if a Meta moderator needs it. No access token, password, email address, portfolio ID, or private account identifier is included here.

Thank you.