Rover 214 si, immobilizer help

Hello, this car has been driving for 12 years. Now it’s the case that both stations no longer work properly. Are both too weak, despite new batteries. (we checked in a normal car workshop) I didn’t get any code back then (I only read in the user manual that there is such a thing at all). The dealer who sold the car to me also doesn’t exist anymore. Here in the radius of 50 km, I can’t find a Rover workshop. I can’t just find the immobilizer. I don’t really need it! I’m afraid that I won’t be able to leave soon, as I often push around on the stupid station for minutes and don’t like it. What can I do now? Need help Greeting Dani P.S. I don’t have any idea of a car.