nRelate widget in sidebar without "is_page"

If I use the nRelate Widget in the sidebar, it’s not ?visible, until I activate under “Layout settings” Pages (is_page). But then, nRelate is shown on every Page.

I just want it in the Sidebar as a Widget. Is this possible?

Thank you for your help!

Love from Switzerland

Lukas

https://www.ads-software.com/extend/plugins/nrelate-related-content/