Completely lost sound on Audirvana Plus and Audirvana (Upnp, USB, ...)

Hello - After a few days of using the latest version, I have to report that I lost all playback on my Kef L50W, streaming Tidal or my library. I cannot use UpNp nor USB wired connection, no sound at all.
Should I uninstall everything and re-install?
Should I remove Audirvana Plus ?
Please let me know, this is annoying.