We have a user that installed our app into his shop and shopify is continuously sending webhooks even though he is not using our app any more. When we try to remove the app from his shop using the api permission DELETE endpoint we are getting the
“[API] Invalid API key or access token (unrecognized login or wrong password)” error. So, we don’t have a way to tell Shopify don’t send webhooks for this shop any more. This is a waste of compute consumption for us and for Shopify.