How to remove integrations on hassio

I tried installing home connect integration on my hassio. When starting it up I had an authorization problem so I have removed the integration. Now, after restarting many times when I try to reinstall the integration it somehow remembers previous incorrect configuration. Which i am not able to adjust because it goes directly to an error on the external website and is therefore not installed. Can anybody point me in the right direction?

Anybody who can help?

Found a solution?