There are two requirements for Xeams to run on QNAP:

• You must be able to install Java JRE. Check if your QNAP model allow you to install JRE 8 through the App Center.
• You should have an Intel CPU. ARM CPUs are not very powerful to run complex applications.

As long as the above two requirements are met, you should be able to run Xeams on QNAP.