It works but...
I had ordered this Nas because it has an HDMI output with the possibility of broadcasting multimedia content in 4K. However, I have never been able to use it in this sense. The environment proposes to install multiple applications, including a paying one, to be able to do it and it bugs and it crashes and it bugs again. The result is that I proceed differently (smartTV retrieves content but via a multitude of abstruse directories).
The Nas "classic" operation is fine even if once again the software management features leave something to be desired. I had for example created a shared folder that I wanted to delete afterwards. I can't do it. I can empty the content without any problem but not delete the folder...
Concerning the remote access, it works but... The environment strongly advises against port mapping via upnp for security reasons but I couldn't figure out how to do it manually... as a result I ended up using this method anyway and again I get error messages despite configuring it via the automatic installation tool. That being said I can still access it via myQnapCloud, the gateway between the connection point and the Nas but not directly via the internet address of the Nas which doesn't seem to work. I have relatively low transfer speeds despite fibre and vdsl connections.
In short, the software part is not completely up to date and it's a shame.