Thanks for your reply.
I don't know how i can import the entire config from the working noscript to the latest version.
Can you tell me, which files are containing the entire config?
upd :13:53 25.04.2018
Your hint can't be problem solving:
I updated a working system (old firefox and old NoScript) to a NOT-working system (firefox quantum and new NoScript) with all the former settings.
So there can't be the reason: With the update, i took over all settings (config data in Users App-data-folder), right?
And further: I tested it on other PCs:
My girlfriends intel-PC: Win7, firefox quantum, NoScript 10...
(She told, on some sites the downloads don't work despite ALL scripts are allowed, it seems the pure presence of noscript disturbs their function)
A friend-of-mine-Lenovo-notebook: Win 8, firefox quantum, NoScript 10...
My sisters Samsung-notebook: Win 7, firefox quantum, NoScript 10...
You see where they are the same?
THEY ALL don't work on Web.de especialy https://navigator.web.de/mail?sid=xyz
The reason seems to be a problem with NoScript on this site.