client 260daily20190711 on win10, with demo.owncloud.org

The client was off for a while. The server reset itself, then the client is connected again.
This message pops up.

The second sentence gives me a hard time. Syncing a "delete" probably means delete the files. If so, please say so. What "right to restore" do I need. Does "making ... unavailable" mean, it is moved to some hidden trashcan, where I need admin rights? If it is simply deleted, then we should say so.

Why is there a warning about "rights to do so" when choosing "keep the files"? Is that different from a normal sync?

The last sentence somehow contradicts the second. It seems to say, that nothing is deleted unless I am the owner. Client runs undermy account, so I am the owner of almost all files here. I don't believe that.

Suggestion:

Remove All Files?
 
All files in the sync folder 'ownCloud' were deleted on the server.
Choose keep  to re-upload to the server.
Chose remove to delete them locally too.
 
[Keep]   [Remove]