Hi, i currently have the same issue here...
I'm rying to use Lightshot with the prtnscr hotkey, but does not works.
I already set the option in Accessibility -> Keyboard -> "Use the print screen key to open snipping tool" to off, but its still not working.
If i change the hotkey in lightshot options to another one like "Insert", the program works proppertly, but with the key prtnscr doesnt work.
Please, i want to use the printscreen key in lightshot!!