Sorry for beeing that late.
Wow, I found out, the user must be at least “Participant” as Forum role, without that everything is blank. So as anonymous there is no Chance to see anything.
https://www.dimedtec.de/cms/neue-produkte/
https://www.dimedtec.de/cms/wp-login.php
user: test
pass: test
Thank you for your reply.
I moved it to a regular page (https://www.dimedtec.de/cms/impressum/), same.
When I check the feed items, all are published.
And the widget itself is visible always (as I see the “No feed items found.” message).
