Multiple SHS's - How to delete

Did you try this: How to delete Homey Self-Hosted Server?

You can reach out to Athom support via Support | Homey. After logging in choose ‘My Homey isn’t listed’ and complete the form below.

Keep in mind though that Athom does not provide the level of support for SHS than for their non-SHS products (that’s why you don’t get a form to submit a support ticket if you select SHS as your Homey). For SHS you have to rely more on help from the community. But you can always try of course via the indicated route.