I went through this about a month ago with regards to using a variety of different control points with my SSR.
Just for clarity I will ad a few points;
MinimServer must be installed on your NAS.
MinimWatch should be installed on your PC/Mac.
BubbleUPnP should be installed on your Android control device.
BubbleUPnPServer should be installed on your NAS.
If you have a QNAP or Snyology NAS the BubbleUPnPServer install is very straight forward.
You will have to create an OpenHome renderer for your Bridge in BubbleUPnPServer on your NAS ( and name it )
You should then see the OpenHome renderer in your control device menu. ( MinimServer will also still be listed )
You may have to cycle the device off and back on for it to be seen.
On a side note, I find the BubbleUPNP / MinimServer combo provides the best audio quality, I have no idea why.
That is compared to the Lumin and Lynn Kinsky / Kazoo on Ios.
But I prefer the Lumin and Kinsky control points for ease of use, but audio quality trumps ease of use.
So you may want to try out a few different control points.
If you are going to use only BubbleUPnP on an Android device as a means of control you might not need BubbleUPnPServer (?)