Ok so anytime i have weird issues with a custom ROM on lg phones no one else is having i always flash firmware again. Check some of the other threads for twrp flashable versions. Make sure to search thread for which version you need. Nougat, oreo, or pie. Otherwise go to op read about how to take a logcat then join telegram group and share it with the developers. Or skip it all and just get a kernel manager that will do it for you. My favorite is ex kernel manager. This might even with with spectrum root app.
Is the latest h870 twrp flashable firmware OK to use or should I use slightly older firmware??