TL;DR: I can't redeem the prepaid iPhone 14 plus promotion. Verizon agents have told me that they can't complete this order for me, the customer has to do it themselves. Wondering if anyone else has successfully redeemed this offer or is also having the same issues as me. Please help me, Verizon Support.
Verizon currently has a Prepaid iPhone 14 Plus promotion that runs till 6/30/25. If you click on the "Shop Now" button at https://www.verizon.com/prepaid/ , you can get a iPhone 14 plus for $249.99 (256GB) or $299.99 (512GB) with either the Prepaid Unlimited ($60/mo) or Prepaid Unlimited Plus ($70/mo) plan. They also give out $200 total service credits over 10 months. 
Second image shows the promotion period, promotional price for the 512GB model and other info:
I get a message: "At this time, Verizon is not able to complete your transaction with your current payment method" after trying to checkout. My card got charged but it got instantly refunded. Then, the error message shows. Below is the image of the error message.

I have tried getting Verizon agents to complete the order for me, but they are unable to. They told me that only the customer can make this transaction. I really want this deal. I'm wondering if anyone else has successfully got this offer or is also having issues like me. Please help me, Verizon Support.