Be careful! Cellular Dongle 2 will not work!

After installing DJI Cellular Dongle 2 on Mini 4 Pro in the European Union, error 1B080006 appears.
DJI technical support reports that to fix error 1B080006, the buyer must independently certify the drone, that is, change the certification from C0 to C1.
Be careful! Cellular Dongle 2 will not work out of the box.
The free/paid period will start from the moment the SIM card is installed in Cellular Dongle 2.
The information on the DJI website about the installation procedure for Cellular Dongle 2 is not true.
Before paying, ask the seller to connect Cellular Dongle 2 to your drone and pay only if there is no Code: 1B080006

This looks as though it’s got something to do with an action cam rather than a drone