when I do a frequency analysis of my garage door remotes it reads 390 MHz. I am able to read and capture the signal but I am unable to emulate it. It says that frequency is blocked in my region. It usually shops up as security+ 2.0_390.
I am new to the community and have just gotten my flipper device a few days ago.
The stock firmware blocks a lot of things to ensure the flipper zero is legal in the country it is exported to. This is probably what you are experiencing.