Shader not visible

hola!

I am using this shader
https://youtu.be/UhqNznJhKcM?si=ygjlIFxL6XK-okqP

it looks great in editor. It looks great in Meta Simulator.

But when I package and check it in my Quest, the materials used for the video (a plane with this shader and a video) don't show the video, neither the transparency.

Can anybody help me? I just need to figure out why it looks great in Meta Simulator, but doesn't work as APK in Quest3

Thanks in advance