Installation problem

Dear Support,

Today I heard about that the Minecraft starts to support RTX, what i wanted to try out.
It was a big suprise since I tought there is no Ray-tracing support on Java, because of the OpenGL dependency. So I looked to how to install it and I figured out It is rewritten by Microsoft, and no longer developed my Mojang. I don't know how to download the new, DirectX based version, without I have to pay again for a product what I have already paid before.
And couldn't find where to write for the support, so this is why I report this bug.

I looking forward for your help, I really don't want to loose my spent money.