Impossible to buy applecare or contact support from abroad(?)/Latin-America

I've been trying for the past 24h to buy apple care for my new macbook. It's impossible.

My account is Belgian.

I bought the macbook in France.

I'm currently travelling in Honduras.

Trying to buy applecare

It starts with this form:

I can't use my saved card, and I can't change my region. My region in my apple account is set to Belgium. I can't fake a US address, because then it says my card doesn't match the region.

Trying to contact support

1. Tried via chat => they tell me I need to call
2. Tried calling => It's not a free number, and it drains my credits immediately. I'm currently in Honduras, and have a Belgian number. I can't find a Hondurian apple support number to call.
3. There is not a single email to use for support.
4. Downloaded their "apple support app" which doesn't work either:

So in short: there is no way for me to currently buy this warranty I'm entitled to, nor to contact them to tell them about the problem. Pretty desperate atm.

[Edited by Moderator]