207 Key Identification Problem

Hello, my vehicle 207 2009 1.4 comfort took the vehicle to a special service, saying that it solves the key problem, it says that the key sends the signal, but when introducing the key to the vehicle, the vehicle does not see or recognize the key. or is someone with a suggestion?

Change your master.

Well my opinion is that now but I would appreciate it if anyone has the idea that it might be more detailed or could be from this and if it is shared, thank you.

the same thing happened to me, my backup key was not running the car could not be done in the private service, I went to many keymakers, they asked for a lot of money and they said that the authorized service would be more expensive. I made it at the authorized service and it was done very cheaply. Keep in mind that all the keys must be with you when you go to the service because they are all coded again

I understood this made me feel comfortable