Setting up an unlocked Lumia 830 on T-Mobile with Windows 10 TP, can I get some help?

[Windows Central Question]

Setting up unlocked lumia 830 on tmobile with windows 10 tp

I just updated my lumia 830 to Windows 10 too, but I cannot get it to connect to the internet. It's an unlocked at&t 830 that I had been using for a while and everything was working fine. Any help would be appreciated