Added pages arent visible

Hi there!

Iam trying to add new pages to the menu but when iam creating a page, i just get a blank page.

I know it is a One-Page Theme, but we need to add for example an imprint and therefor need a second page.

How do i fix this?

By the way, this guy had the same question then me, but wasnt understood: https://wordpress.org/support/topic/how-to-add-an-impressum?replies=2

Thanks for your help!

Regards,
Paul