Hello,
I tried deactivating all the plugins, but it did not help. I also deleted all the plugins and reset the folder in my host’s FTP file manager.
I tried going back to the unedited default theme. I even removed all themes from my host files.
I do not have “mu-plugins” as far as I can see.
Nothing has helped. Any more suggestions? Maybe I need to contact WordPress for support via phone/chat?