create an account on Cloudflare and configure DNS Management of your domain. 

Si, puse la tienda detras de cloudflare y listo.

I put it behind clouflare and that solved the issue for me

Seria super que puedan hacer esta integracion.

Did you get this fixed? I'm getting the same issue with one of the ISP in Colombia "Claro" and I know other shops are having the same issue. My shop is edredona.com