OpenWeatherMap Configuration Error after update to 3.0

I am using OH 4.1.2 with the OpenWeatherMap widget which was working as expected. Recently there was an OpenWeatherMap Update from 2.0 to 3.0 and therefore my weather data were not working anymore.

So I changed in the OH OpenWeatherMap account the Api Version from 2.0 to 3.0 and thought thats all. Now I see an error message in the “One Call API - Wetterinformationen” like this:

CONFIGURATION_ERROR
Ungültiger API Schlüssel. Mehr Infos unter https://openweathermap.org/faq#error401.

I checked the API Key again but it has not changed. Had anyone the same problem after the update to 3.0?

Thanks

See OpenWeatherMap - Bindings | openHAB.