I have added the WUndeground to my config and simply copied all the lines from the example for the items. This gave me something like 15 circles. As most of them are duplicates (c/f) i removed them from the confit file, reloaded HA - but they are still in the web interface. Is that because their values are in the HA database and how to remove them? I do not want to use a hide option. I want to remove them completly.
No, that’s because the frontend is heavily caching.