The latest update includes Netflix. I received the update request today, otherwise check for updates manually in the settings.

I bought the 4k laserprojector in August 21. Netflix could not be found via the app store even after a system update.

Here's what worked for me very simply:
Installed X-plore file manager from the play store.
Found netflix in the app manager as deactivated and hidden.
Activate pressed
Done.

I recently bought it, netflix was installed from the start as part of the initial configuration and automatic update.

Install netflix: have you found a solution in the meantime?

I have also tried this with the APK, but it doesn't work. I can install Netflix, but then I get the message that this device is not supported. I read that you have to download an outdated version (4.16.1) without DRM for it to work. Are there other ways to Netflix as easily as possible?

This should be possible if you download the APK from somewhere (there are various sites) and then install it on the projector with a USB stick. I haven't tried it out, but it should be relatively easy.

Best easy way : buy an Apple TV, connect to your projector and use Netflix from it.