Today I saw another article on this issue... apparently when reflashed, the ECU writes a tamper code to the body control module (which I guess the tuner didn't know about, or care). Anyway the car owner went as high as VP level and was shut down every time, so now he's pulled his posts and disappeared.
https://www.autoblog.com/2023/05/15...-hellcat-tune-turns-into-a-36000-repair-bill/