Error creating Encrypted SSD / Migrating

I’m having a similar issue to the above, with the a311d module and reform-tools 1.45. I migrated via the script reform-setup-encrypted-nvme and in reboot everything worked as expected. unfortunately now it’s not booting and the screen backlight doesn’t come on either. Typing the unlock password into the blank screen doesn’t do anything that I can see.

i can get it to boot from a clean SD, and also if i reboot that (reboot specifically) swap the card for the nvme-boot one at the right moment, and select power on from the keyboard menu, it boots normally. Obviously not ideal but i may just try to leave it plugged in and powered up until I can fix this.