I created a new app and transitioned everything targeting a sandbox environment to that, webhooks etc. Once I confirmed that everything was working, Iwent ahead and deleted the old app.
However, Inoticed some webhook calls coming in that fail the signature verification. On further investigation Ican see the webhook calls that fail have the app id of the deleted app and hence fail as the validation now generates a hash with the new oauth client secret for the new app. Webhooks for the new app are working as expected but Iare not sure why HubSpot would still be making webhook calls for an app that was uninstalled from the sandbox then deleted. I did not pause the webhooks under the app or unsubscribe assuming they would be removed with the application deletion.
Can you assist with this please.