Android OAuth 2.0 Client can't verify app ownership

[devdeveloper404]

I am trying to verify app ownership in OAuth client in Google Cloud Console -> APIs & Services -> Credentials -> OAuth 2.0 Client IDs. But I get the error "This client is not applicable to verify ownership because it's not a Google Play Store app", regardless of which Android OAuth client I'm using with the SHA-1 of google play app signing key or release key. What could be causing the error? How to fix the error?

I have the Admin role, but account with the Owner role had the same problem. The app is published on Google Play.

I copied package id and SHA-1 of Signing certificate from Google Play Console to create this Android OAuth client, so I don't understand why I'm getting this error.

I also contacted Google Play Developer Support, but their response is "You should be able to find more information regarding your concern by contacting the Google Cloud Support team."

Thanks for your reponses in advance. Sorry if I posted the question in the wrong location.