So I bought a HP Spectre X2 with LTE
It was designed for Verizon but the Amazon Listing says Supports T Mobile

I put the SIM In. And it works shows T Mobile and everything is fine.

Then if I reinstalled Windows or Update. Or ANY change to the OS. The LTE no longer works. It will show T Mobile. It will go back and forth between Activating and Applied

And if I try and connect it says Enter APN No APN Found

I've had To Mobile on the phone. Threw various APNs in. And Nothing

There is an APN there but it just won't work. Something is getting messed up and I really love this tablet and want the LTE to work

Please help