RPLidar360 failing prearm check

I am trying to pickup where someone left off on figuring out a lidar360 setup on a pixhawk2 profiCNC with the RPlidarA2. The lidar will spin up when I have it hooked up to a computer (sometimes) but I can’t see anything in the proximity sensor monitor on Mission planner. I tried setting both “invertTx” and “invertRx” but didn’t seem to get it working. I haven’t entirely found a pattern for when the lidar spins up and when it doesn’t while attached to missionplanner. When I plug the battery in after separating it from my computer usb, the lidar doesn’t spin up and I can’t seem to find any way to get it spinning. I can edit the parameters from my herelink. I followed every wiki page I could find through other threads but I can’t seem to get it working.