Did I send my trade-in device to the right place?

Good morning,

Transferred over from Sprint just a few days ago (loving T-Mobile and its customer service so far), but I have some questions about my order and trading in a device.

I am trying to take advantage of the $700 off the iPhone 11 with a trade-in of an iPhone. I distinctly remember attaching a trade-in, with IMEI and all, to my T-Mobile online order. I was required to put a down payment on the new phone, and the phone was shipped and delivered with no issues.

However, I can't seem to find any documentation or details regarding my trade-in and I can't check the trade-in status. I go to My T-Mobile / My Phone / Trade-in Status and am met with this screen:

From what I've seen on forums and Reddit, this is not what I should see: instead, I should see a Shipping label and RMA information to ship my old device for trade-in to T-Mobile/Assurant. I have also heard there is some sort of "Device Recovery Agreement" that I would've signed along with my Device Financing Agreement and Service Agreement when initially making the online order--I can't seem to find any Device Recovery Agreement.

I called Customer Care and asked about where to send my device and I was provided a UPS shipping label to:

T-Mobile NRC,

13704 Independence Parkway,

Fort Worth, TX 76177.

The Care Representative said that my credits could take up to two full billing cycles before being applied to my account after the device is delivered.

However, from what I have heard, this is no the appropriate location to send trade-in devices, as the NRC handles returns and Assurant in York, PA handles trade-ins.

So, my question: will everything with my trade-in work out OK? Have I sent my device to the right location, or is there some sort of confusion or error in all of this?

Gracias.