Home internet rebate - can't access northlane website

koji wrote:

I submitted an application for the home internet rebate and received the information to log into the northlane site. The site won't accept my account information. How does one proceed?

Login here:

promotions.t-mobile.com 

then check your status by scrolling down to Reward Tracker and clicking View.  If it was approved and ready then you can scroll down again and click Redeem Card.  It is a virtual card so I just added it to my Google Pay.  You can also add to Apply Pay.