Accupoint and accupower not compatible - Trijicon Accupoint 5-20x50 Sunshade

I purchased the accupoint 50mm sun shade hoping it would fit on the 50mm accupower scope. It does not. I contacted Trijicon and they told me they were not compatible and they didn’t know of any other brands that would fit. If you have an accupoint, you’re good. Don’t know why Trijicon would thread the accupoint and accupower differently when they are both 50mm.