Hi Movin,
thank you for your reply. I modified my article so that I was able to post ist again and it worked. No error message of “duplicate”.
I was not able to post my old article. And nothing was shown in my Profile, that I posted an article. Thats why I don’t have a link to that.
But for now it’s fine. I was able to post my question 
New post: Use Shapely widgets for other additional pages
All the best
Matthew