Pay in 4?

Description

I see alot of people are having the same problem as me. It says my money was added to my PayPal account but when I check it’s 0I’m wondering if it’s possible to use pay in 4 with a merchant on the Facebook marketplace? If so, how do I do that? It’s not giving me the option when I go to checkout. Purchase is for a little over $300, and I have a few items on pay in 4 already. Do I just need to pay off one of those, or am I just not able to use pay in 4 for a fb marketplace seller? Thanks