Donald Duck magazines were only issued in Gemany in the early 2000s and mostly not worth it for two reasons.
One, the Mickey Mouse magazines features stories revolving Mickey, Goofy or Donald and also had a gimmick toy in every issue.
Two, LTBs were far superior for the average reader, containing 250 pages of stories as a paperback. As it's been popular for over 50 years, people rather take that over other magazines especially because of its price.
Its popularity also led to printing Darkwing Duck comics in paperback form.
as with Sweden and Denmark, there's also the "Donaldist" group which has been founded by german Meterologist Hans von Storch.
This group, called D. O. N. A. L. D. ("german organisation for non-commercialized members of the vocal Donaldism") holds a congress every year and gives tons of scientific essays first and foremost towards Donald Duck and the Duckburg universe. Hereby, only Carl Barks is been seen as canon and everything is ignored.
In 2008, a map of Duckburg by a cartograph was presented at the congress, fittingly called "The only true city and environment map of Duckburg". It took 14 years to be finished with after catalogizing 52,000 drawings done by and only by Carl Barks
In addition to that, many prizes have been given out, such as the "Flintheart Glomgold prize" for Josef Ackerman, the president of "Deutsche Bank", the biggest german bank.
A HYMN EXISTS, and it is this one: https://www.donald.org/organisation/hymne/hymne.mp3
According to Donaldists, it is the only song composed by Donald Duck and, thus, must be sung by members to unite its people of D. O. N. A. L. D..https://www.donald.org/organisation/hymne.html
As one can see here, it is based on a comic strip that people here should be familiar with: its text is usually replaced by "crawling in my skin".