Content went to english right away

Hello,
I need help with the content on my new page.
My default language is German and I decided to add English. I had all of the content ready for the German side, but it all disappeared when I added English. Now, the English posts have my german content (but ONLY from my elementor pages) and the content on the German page is completely gone and I can’t access Elementor anymore.
On the English pages I am able to add stuff (even with elementor) but on the German site, I can’t add anything.
What am I doing wrong?

The page I need help with: [log in to see the link]