Pinephone Pro won't boot

[Chief]

Try press and hold the power button for about 30 seconds or until light comes on.

Unfortunately, that didn't work

Then try the same but first hold the volume button down as well. You may have to mess with procedure a bit.
Another option that I had to do once was remove battery, press the reset button and then power button and hold for several seconds.
Release buttons and then wait if possible till tomorrow and replace battery and then try normal start. Keep in mind the volume button as well.
If the phone does show sign of boot leave alone until fully booted up. Depending on os consider Manjaro Phosh. Good luck friend.
Also search on this site (What to do if your PinePhone Pro does not boot)