I remember reading an analysis on one of those projectors; the author found a residential proxy running on their device. I would recommend keeping these things off the internet.
I'd be very interested to see it if you still have access to it.
Dunno if this is the same issue, but someone found malware in their projector. I'm not sure about the accuracy since the report is blatantly AI generated: https://github.com/jrm360seclab/aodin-vo1d-malware