Payment Links with alternative payment methods (APM)

Hello! I am integrating Rebill and I come from Mercado Pago. I already have the payment links up and running, but I found that for Argentina, only cards appear as a payment method.

Looking through the documentation, I saw that there is APM Checkout for alternative methods, but it is not clear to me if it only works via API or if there is a way to use it directly in payment links. This is somewhat limiting because on my platform I need to offer options such as Mercado Pago, Ualá, Modo, etc., and currently I cannot find a way to do this with payment links.

In addition, the APM documentation is quite brief, and I don't fully understand the flow. From what I've read, it seems that you have to send the specific payment method instead of letting the user choose it at checkout, but I'm not sure if that's the case. Also, the link where the available methods (APM) by country are listed is down, so it's hard for me to know exactly what options I have.

Basically, I need to know if there is any way to integrate APM with payment links or if it can only be done via API, and if you can improve the documentation on the expected flow for implementing it. For those of us who use payment links, it's quite important to be able to offer these alternative methods.