Hello Rashida,
Thank you for your help - the menu was resolved by saving the setting as suggested, but SP page builder saving persists... I don't actually know what you want me to do:
- I tried updating the SQL table like this:
U P D A T E c6yfw_sppagebuilder S E T checked_out_time = NULL WHERE checked_out_time = '0000-00-00 00:00:00'
no change
- this thread actually does not show any solution:
https://www.joomshaper.com/forum/question/4087?order=newest
she only said that it was resolved, but did not say how.
I don't know what should the default setting be to be able to save anything, but my table looks like this:

Even when I change checked_out NULL to No, it does not change anything...
What do you suggest?
Petra