I have several problems (among which this thread disappearing).
If I go to Appearance – Editor, the loading line gets stuck at 25%, sometimes it pulls to 75% and gets stuck again. It never gotten further, even after hours of waiting. I have the feeling that a lot of the features I miss should be there. For now I can adjust footers at ‘patterns – footer’, but I cannot choose one to use in my website. Also at ‘Navigation’ I only see 4 of my 5 pages. Sometimes when I change the order it confirms it, sometimes it says I don’t have the authorisation to change the menu. In all cases, the menu in my actual live website is unchanged. 5 pages without the right order.

I deleted all my plugins, I work in WordPress 6.6 and I tried Opera aswel as Chrome browser. What would be the next step to solve this?