Chateau 18ax + TMobile

Chateau 18ax with a working TMo SIM card.

Looking for a config setup or script that outlines the steps to service working on this device.

I can scan and see other LTE networks but TMo is reporting an error when using the Chateau18.

Cudy reports for the P5 shows the following has be be updated to work:

https://www.cudy.com/newsinfo/4638036.html

But this obviously not a Cudy device, therefore I need a Mikrotik translation for the steps involved.

I have already gone through several ( about 17 setup) scenarios, none work.