Thank you so much for your response and your suggestion, I deactivated the plugins one by one, and you were totally right. The plugin Gutenberg was conflicting with the SEP plugin for the List view and the visual layout of my events. I removed Gutenberg and everything is working fine.
Thank you,
Dreyes
That is excellent, thank you for your response and the code. To which of the php files should I add the code?
Has this issue about moving the elements between columns been solved? I am having the same problem that when I switch elements in the Visual Layout everything disappears and then I have to reset the visual layout to make it work, but I cannot change the layout