Something happened yesterday (Feb 13) that caused my PS Audio Sprout to disappear from the Connected Audio Devices in Roon. This was before I updated my QNAP TS-473 to the latest firmware and may have been a result of the latest (?) Roon update.
Roon version is: 1.8 (build 756) stable
QNAP Firmware is: 4.5.2 1566 build 20210202