I'm trying to swap phones with someone on my account using the Swap Devices page in My Verizon, but after I click on the two phones to swap, I get an error message saying "we are unable to find the details in our system for this device." The two phones I'm trying to swap are a 2018 iPhone XR with an existing line and a new iPhone 12 Pro with a new line that I activated yesterday. Any idea what's wrong?