I want to stop using custom domain settings, but there is not way to reset it
Yes, totally makes sense that you should be able to. Can you send an email to firstname.lastname@example.org with the domain you want to cancel and I’ll do it.
Thank you for your contribution. We’re moving this thread to Github: https://github.com/plausible/analytics/issues/51
You can now remove / manage your custom domain integration in the website settings of your Plausible account without any manual intervention and support needed from us.