1. The USB C cord that came with my Flex was slightly loose so it would feel like it was seated but just a small movement of the cord was enough to stop the charging, so I ordered a good quality 10 ft cord.
2. The 2 amp charging brick that came with my Flex was just enough power to slowly discharge the battery if I was plugged in while using it...not acceptable so I tried the QC 3.0 brick from my phone and it was providing enough power to slowly charge the Flex (Power level usage set to 3) while using it so I'm assuming it was probably getting 2.4 amps...so I got a good replacement cord that was rated to USB C 3.1 (apparently 3.1 is much better at handling power than 3.0) but not rated for video and I also got a power brick that the USB-C port delivered a max of 60 watts.