Why can't I shift gears often after starting my new Defender 130?

Is it difficult to shift gears right after starting the car?

Hey folks, I have a question. My car can't shift gears. When the engine is off, the gear lever can move freely, but when the car is on, it's like something is blocking it, and it won't go into gear. It's a manual transmission, and I can't shift into any gear from 1 to 5 when the car is on. Does anyone know what the problem might be? Thanks 🙏🙏🙏🙏

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