The ProRender addon wont work on the Windows store Edition of Blender, i have posted this issue on the ProRender Github page in issues but i got no response.
So i'm posting here.
You might look at this thread. The AMD staffer in that one might be someone to ask.
https://community.amd.com/t5/opencl/opencl-compiler-bug/m-p/126319#M10020