LtAP LTE6 with sim no card. Eth Port usage

Hello, good evening,

I just received my LtAP LTE6 unit, and I just want to connect to the internet to update the system, plug in the ethernet connection and create an AP.

The unit is set to LTE - 192.1.88.1
My other router ISP with the internet is 192.168.1.1

But it does not allow me. It creates a bridge, and then I update the AP, I lose the AP, and then I have to reset the whole system. I cannot connect to the internet.

Very annoying.

Can someone tell me what I am doing wrong?

Cheers
Julian
WhatsApp Image 2024-02-08 at 18.28.46.jpeg