I honestly does not get it. The function is somehow really, really nice but really, really weird.
I created a new page:
~~TASK:MyUser?2017-02-18!!~~
====== Task unique ======
Description of this namespace. \\
Also i changed the header with the ~~ thing.
Okay, i got that the feed-plugin need additional 6 plugins. By looking at their description i would say its because of that. I may give it a try later but its a bit, well, inconvenient.
Thanks for the help - i now know i should take more care about the "requirements".