Google will delete OAuth clients falsely flagged as unused

Any Google Sign In user here bumped into this? Google sent out an email with this message yesterday:

The following OAuth clients that you manage have been inactive for at least five months. They will be deleted unless you take action:

...list of client ids...

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Now, all of those client ids are used in production, so this seems like a false positive. There seems to be no way to prevent this except "using them" but we already use them so it seems like we're out of luck?

I couldn't find a way to report this either, Google Cloud support is a maze and I either don't have some permissions for it or it redirects me to some support page or AI chaptbot.