Mods: Thanks for deleting my post from earlier. Please refrain, I've got a legitimate question and I will keep on posting it if you're going to delete it.

I cannot get any 4k options in Prime Video on my 55XE9305 - that's using both the Native App and a PS4 Pro. I do not have a "Included with Prime 4k Ultra HD TV" category and none of the regular streams ever go above 1080p

Both the PS4 Pro and Native Netflix apps work fine - 2060p, HDR all working.

It's as if the Prime Video app is not seeing my system as being 4k capable, when I know it is and Netflix confirms this. Any ideas? Getting frustrated.