GDX5 (4 Wire System) with Ring Intercom

Hi, So I've purchased and just received my Ring Intercom. When I checked compatibility, my specific model was not listed but another from the manufacturer was. So I decided to take a chance and preorder the Ring Intercom and hope that it worked, or would upgrade my handset to one that is supported (which I have now found out isn't as straight forward as I thought...) Now, in the app, my intercom manufacturer isn't listed at all (GDX) despite being in the compatibility checker. I was thinking of trying the "generic 3+n" option (as my intercom has 4 wires), but I'm not sure if this will work as two of the wires are 0v and 12v, with the other two being mic and speaker:  Does anyone know if there would be any damage caused if I try to connect up with the 4 wire "A" harness as per the app? Failing this, I would be interested in upgrading my handset, but I'm not sure if I could just swap out for a (Ring compatible) 4 wire 12v one or if it's a little more complicated than this as my research so far has suggested? Any help or advice would be greatly appreciated!