Led is gray color and stops responding

Car model(year): 2020 EV Niro Kia
Phone model(Android version): Samsung S20 FE 5G
Carsifi adapater firmware version: 1.10.0

Issue description:
LED is gray and stops responding have to leave it disconnected for 2 minutes before it restarts, when returning to the car, it again has a gray led (dim white color) and stops responding. I tried reset and re pair the phone but it does this behavor again. Is this a defective unti and how can I get it replaced.?