Roon 2.65 and later are not supported by Roon on NAS install on QNAP´s QTS 5.x system. The latter is not meeting the new minimum requirements anymore, s. official post her:
Many roon-on-QNAP users, myself included, have decided to run roon in a docker container via QNAP´s app Container Station instead. This requires stopping/deinstalling the roon on NAS app first, installing container station and creating an individual docker container for your machine. It is a bit tricky when it comes to finding correct share folder paths, but doable. More practical information: