Overkiz shown multiple times in my settings -> Integrations tab

Best is to report this in the Overkiz topic for local installation (or on GitHub). Overkiz integration - Local API [Development / Testers topic] - Home Assistant Community (home-assistant.io)

You are using a very early alpha release that indeed has this bug at the moment. Why did you need to use the local API integration? Which hub do you have? We haven’t seen the behavior that peoples account would be removed due to ‘too many API calls’. It would be great to learn more on this matter.