Hyperpixel 4 screen not showing screen

Hi everyone!

I have a hyper pixel 4 screen that doesn’t seem to boot with the screen working. I’ve followed the steps on the GITHUB except I cannot change the /boot.txt file at all. My screen is working and does show up but it doesn’t do anything after showing the splash screen for the OS.

On a pi 4b 8GB running Debian Bullseye 64