We need your help for Gonzalo

My son Gonzalo is 10 years old and suffers from a rare immune disorder for 8 years, which has not yet been clearly identified, that every day becomes more acute and interferes with their quality of life. I am a single mother of 4 children, displaced by violence in Colombia, refugees in New Zealand and we lost our family and I don't have to cover the costs of diagnosis, we must travel to latin America where there is a hospital specialized in the diagnosis and treatment of rare or orphan diseases.