I've tried both but neither of them worked.
I've got the full version now (rented) and now it does work.

Hello,

I'm trying to test the AI denoiser. I've tried following different YT tutorials.
All of them have a "DeMain" button showing up in the live viewer after enabling the AI denoiser. However it does not show up for me.

I'm using R20 and the latest demo.

Thanks in advance