thanks for your Mailsupport! It now works.
My Problem/Solution: At first I tried a dropbox link (I assume it doesn’t work because the https//:) and at second I used a normal path link to root. A link without https on my server and a local file in the dashboard public folder (localhost:3030/outboard.txt) work great.
I have one last question. Is it possible to change the description or the language “last updated…”?
I didn’t find any information in the script.