2-3 latest added Color sections dissapear after updating

Hi there, I have a ‘volentury/charity’ website for clean water in developing arera’s / coutry’s that I am working on.
cleanwaterlyse.nl (will become .com).
On the Home page an error keeps occurring. After adding sections/parts and updating a second or third update will remove everything updated.
I tried with various color sections or combinations stored as an element template… even in the stored ‘hole page template’ element it will remove it.

Is there a bug in the database/storing somehow possible?

In the middle of adding color sections to the page I experience that when I update the page I get an error (whote screen with error remoark) and the latest added color sections/white space or other is removed/dissapeared… in 1-2 previous updates just before that all of them or most of them were updated and appeared…
I had Comlianz plugins for gdpr/cookie message that I deactivated and deleted.
And 1-2 other (wordpress assistant?) I deactivated or deleted… still the same, so it seems.

Please help me out.

• This topic was modified 2 hours, 27 minutes ago by Henningcircle.