Suddenly start page as HTML block

Hi,

first of all, thanks for the great theme.

I am very satisfied with it so far.

Today I edited the start page and when I changed the footer area, I see the start page in the editor only as “HTML” without blocks. As soon as I change it to blocks, the whole design is corrupted.

https://ibb.co/CM2d8kd

https://ibb.co/d0vn1yn

Why was the start page template suddenly saved as a complete HTML block, even though I hadn’t just edited anything there, but in the footer? Any idea how I can undo this? I have not found any revisions in the template editing.

Thanks a lot for your efforts.

Many greetings,
Andreas