It took 3 days for them to fix mine. All seems good now. I’ve driven about 1000 miles since I got it back and I’ve put it to the test. A couple hard launches and pulled a heavy trailer.
I just picked up my new 2021 Powerboost last week. First time getting on the throttle hard I had the same issue.
HEV-Hazard and no power! Taking to the dealer today.