Hello!

I use "Picture of the day" located in: Desktop Folder Settings > Wallpaper > Wallpaper Type > Picture of the Day, to change wallpapers daily on my Kubuntu Desktop.

But not all "Providers" of "Picture of the day" seem to be working. The following do not fetch any wallpapers at all:
a) Flickr
b) National Geographic
c) Weather Satellite (NOAA)

Thank you!

The problem with NOAA has been reported here: https://bugs.kde.org/show_bug.cgi?id=443424
As for Flickr and National Geographic: the problems are most likely the varying copyrights of the images, highly varying sizes, videos instead of actual pictures, etc. It is pretty much a cat and mouse kind of game. The only reliable source is probably APOD.
In any case: this kind of reports definitely belong to the bug tracker, not in the forum, as we can't offer any immediate help for it.

Thank you for responding! If you could, can you please point me to the place where this code resides? I am interested to take a look. Thank you!

You can find the code here: https://invent.kde.org/plasma/kdeplasma ... ree/master

Great. Thank you!