If You are making use of Twonky Server from the QNAP App Center on their NAS then beware of that they have dropped the support for Twonky Server in the current beta v4.3.x and moving forward. Quoting a brief response that I got from the QNAP support after that I realized that Twonky isn't no longer combatible with the current beta:
"After 4.3.x, Twonky service is not available on NAS system. For DLNA service, we will suggest please apply the built-in DLNA service and install media streaming add-on app on App center for advanced management too."
Depending on what QNAP NAS you have, you can quickly overcome this issue by making use of the ContainerStation and run a dedicated Twonky Server to support the BeoSound Moment. The container solution dosn't add any significant overhead compared using the twonky server from the app center.