Odoo Calendar – Admin Consent Workflow Issue

We are using Odoo Calendar sync with Outlook. When a user requests access, the admin approves it from the email and grants access in Azure.

However, after approval, the user still sees “Request access” and the request is not hitting Odoo’s redirect URL to generate the token (no token is received). In Azure, it shows that the user has been granted access to the app, but their calendar still does not sync in Odoo, and no tokens are generated for that user.

We tried removing and re-registering the app. We tried setting the app to not need approval. We tried adding users as admins (POC worked, but we can’t make users admins of course.)

What else could be wrong, even though we have configured the correct redirect URL?