Bug in the App Submission process (Domain is invalid)?

Hi @tommy Yes, we’re actually struggling to get any support. We have a duplicate post here:

We have identified that the problem is the parameters we are adding in as part of the OAuth Redirect URL. These are vital for us to recognise a user.

This is classed as an Invalid URL : BookingLive

This passes validation: BookingLive

The latter example passes validation and allows us to submit but the integration will not work without the parameter. Can you advise what we should do?