Hve seen PlayOn abound over the years so I subscribed to PlayOn Home to check it out.
I have to say that I cancelled my subscription within hours because of the lack of HD audio support.
But I thought I would come back and look a bit closer and sure enough it isn't hard to find serious problems with your product.
For example, Paramount Plus doesn't understand profiles so I can't use it. Disney Plus understands profiles but cannot see anything on entering a profile.
So not only does your product not provide essential (these days anyway) audio support two out of three channels I have tried simply do not work.