Light Phone III stuck in boot loop on the "Go Light" screen

Hi,

Hey all, hoping someone here has dealt with this before.

I'm running my Light Phone III in full Android mode, and over the past few days it's been getting progressively worse. Now it's fully stuck and I could use some help.

What's been happening:

• It started rebooting several times a day out of nowhere
• After unplugging from charge, the screen and inputs would lag badly for a few minutes before catching up and working normally again
• Now it won't get past the boot loop — just hangs on the "Go Light" screen indefinitely

What I've tried so far (both on wall power and on battery):

• Holding the power button for 30 seconds
• Holding power + volume up for 30 seconds
• Holding power + volume down for 30 seconds
• I can get it to fully shut down by holding power + both volume buttons together, but it just loops back to the same screen on restart

One thing I noticed:
When it's stuck on the boot screen and I plug it into my laptop, adb devices does detect it, but it shows as "unauthorized," so I can't run any commands from there.

Honestly at this point I just want to get it booting again — I don't mind if I lose my data, I just want a working phone. If anyone knows a recovery mode, fastboot combo, or reset procedure specific to the LP3, I'd really appreciate the pointer. Struggling to find anything beyond generic Android troubleshooting for this specific device.

thanks