Can’t charge, breaker keeps tripping

[Rebel]

I bought my Hummer EV SUV in March, started using it in June. I charge at home using a ChargePoint Home Flex NEMA 14-50 on a brand new 50A breaker @ 40A. All of April was absolutely fine, no problems unless I blasted the amps in the next room; big power draw. I was told that i could save money by switching over my ComEd service to hourly billing, so I did. The very day I started the hourly plan my charger started tripping the breaker. Tried the following with negative results:

• Reinitialized Flex
• Reduced power to 36A
• Used GM 32A mobile charger
• Reset all circuits
• Ran Flex with all other breakers off

Don’t know what they did to disable me, but I bet it has something to do with the dumb SmartGrid. Now I can’t charge for more than 5-10 min before it shuts off. Any suggestions?