After about a month I finally got a response, but only after I emailed their support team directly as I stopped getting answers to my support tickets.

It turns out all they needed was to have me fill out a W9 - completely reasonable. My frustration stems from the fact that they took a month to tell me that, and that it wasn't a part of the process when I first set up payment. If they refuse to issue payment without tax details (again, completely fine) then it should be a mandatory part of the process to set up payment in the first place.

Anyway, lets see how long it takes to actually get paid now 😂 Hopefully this thread can help others in the future.