when I try to download/upload/delete or ANYTHING that changes file with my webDAV server encrypted with TLS 1.2, an error message "403 forbidden" pops up. just that. "403 forbidden".
I'm quite sure that server does not have any problem. All webDAV clients(CyberDuck on windows, finder on macOS, solid explorer on android) I tried worked well. WinSCP was the only exception.
I tried few options given to me but nothing changed. I think it's a new type of bug.