I have developed a free plugin for use the MoIP:
At the moment there is a plugin already paid for it.
I intend next year to develop some free plugins for this purpose.
I developed a free MercadoPago plugin.
In api support found them just stop and receive ARS and BRL.
They say it should work USD, however it actually works.
Error appears in cart.
If you want to help me, I can improve the plugin for it to work well for Chile.