Facing problem with proxy ( Cell Tower )

Hey guys.

So I’m facing a bit of a problem that I’m not sure how fix.

The other day I ordered a t-mobile sim card from amazon which arrived today, aswell as a US proxy from proxy-n-vpn. I installed the sim card and put the proxy as my manual proxy under wifi settings. I then tried installing a couple of apps to see my sim card information and it still shows my own country instead of united states. Sim card country is US, but “cell tower” shows Denmark. I have no idea how to fix this and would appreciate any help. Thank you

if you are located in DK you are always gonna get DK nomatter which country sim is from its like you traveled from us to dk and are using roaming cuz you are outside the range of its home network and it connects to another available cell network in your country