Can you possibly test run 126.96.36.199 on this box LE SD Card and see what happens.
Might want to report the Android Firmware Version on your box as well.
Tested kszaq Jarvis build 188.8.131.52 on Beelink MXIII II, no boot issues for 5 consecutive reboots. Android firmware version, as said in my previous post, is 108M0. I can't find any websites to download this image, only found 104M0 (zip) and 106M0 (img).
EDIT: Fresh mSD card installation, prepared the image by rufus and used device tree gxl_p212_2g.dtb and remote.conf file for M18 (I shared the remote control with Mini M8S II).