Why does Printful show up as my store's name in the vendor field?

[CapitalC]

I've been using Printify but just added a couple of Printful items that Printful couldn't manage adequately. I don't display vendor on my site, so this is not a huge deal, but in the Printful product listing in Shopify, the vendor shows up at my store's name, not as Printful (as it does with Printify). Anyone know why or how to change it?