Issue persists – rebuilt text blocks multiple times but problem keeps returning

Hello Support Team,

I’m following up again regarding the ongoing issue on the page:
👉 https://raphaelaplasch.at/einblicke-und-referenzen/

Previous thread:
👉 https://kriesi.at/support/topic/issue-recap-blocks-displayed-side-by-side-instead-of-below-each-other-on-einblicke-und-referenzen/?avia_support_contact=avs_68e6650791b160.76062793_1489958

Summary of the issue

The main content and footer blocks are displayed next to each other instead of below each other.

The text in the main content block cannot be edited anymore.

The issue originally affected one user, then a second one, and now all users, but only on this one page.

The page worked perfectly fine for about two years before this started happening.

What I’ve already tried

I’ve deleted the affected text blocks and rebuilt them from scratch several times.

Each time, the page worked fine for a while — but after some time, the same issue came back again.

I have made sure that there is no invalid HTML or unclosed tags in the content.

Request

Could you please take another look at this?
It seems like something deeper might be causing the problem, since it keeps reappearing even after rebuilding the blocks.

Would you need temporary login access to inspect the page directly?
If yes, I can ask my friend (the theme owner) to provide it.

Thank you so much again for your time and patience!

Best regards,
Verena Pichler