Thank you.
I noticed something strange with (not) synchronizing Dropbox, but that has to do with Dropbox and not with Odrive. (.4 and.7 - variant without ? and no illegal characters was also not synchronized)
Anyway, currently all ‘not allowed’ items are resolved. So thank you for your help.
Now I need to figure out why I get a list of items in the Trash bin. I opened another topic for that: