No sense in blaming it on the Miinserver.
No (NO!) UPnP/DLNA 'compatible' software or device has ever fullfilled the prototols of UPnP/DLNA.
They are either insufficient implemented or you have a combination where different things are or aren't implemented the same way - or not at all.
The specifications for UPnP/DLNA simply are too vague, too much is left over for the implementing companies to decide. All too broad and flexible.
Often you see very badly implemented DLNA, even if the logo is on the product - made in a rush.
No wonder that Apple took another approach - happily we now have a 'play-to' feature, that works (AirPlay).
At the time as Logitech did not only care for mainstream products and made their 'Squeezebox'es', they decided for a propritary server solution - the Slimserver, which later became the Logitech Media Server.
Or that Sonos created their own protocols....
These things work - but you are limited in your choice of hardware, of cource.
B&O went the Windows-way long ago - beginning with the BeoPlayer and the BeoPort. The MediaPlayer in the NL-tv's are made of the same stuff.
You will always run into trouble, if you try to combine DLNA solutions from different brands!!!
B&O usually recommend the Twonky Server, having tested their gear with it.
But there are different Twonky versions and even Twonky sometimes is poorly implemented in NAS devices.
I would suggest trying JRiver - originally a Windows application - there is a Mac version of it too.
Using a DLNA server always mean 'playing' with the settings (and maybe deciding to use a different one)....
....unless you are lucky to find, that the one you picked, works perfectly with your device 😁
Greetings Millemissen
