When I go to my online shop view, only one size is displayed as available, although everything is ok with the product
And for legal, pages and navigation, I have entered data protection and terms and conditions and everything for the footer, but it is not displayed to me in the website view
Thanks for the details and here it is always very helpful if you post a screenshot or a link to a concrete example so we can analyse this a bit faster. You have also reached the German community but we can chat in English, that’s no problem.
Do you have an example we can look at? For that you can create a temporary Preview Link which would help us to help you! 
Ok great and I am guessing you simply haven’t added a menu block to your footer yet, is that correct? This is what it looks in my Test-Origin Theme:
Let me know and we can take a further 
!
Thank you very much Champ, both questions have been done
