Cannot pick up online order in-store without card device was ordered on?

Hi, so my dad bought me a new phone online. I'm an authorized user on his account. From what I understand, I just need a government ID when I walk into the store to get the device. But, they also told me I need to bring the actual card he ordered the device on? But, like, this isn't stated on the order confirmation page at all. The page just says: 

"Be sure the primary account holder or authorized user coming to pick up your order brings a government-issued photo ID. For your convenience, we can hold your order at the store for 3 days."

So, I'm confused? It does say on another site page about in-store pickup that you need a credit card "if you only bought accessories." But we bought a whole phone, so...

I'm just confused.