I am trying to help a friend with her macbook which faces a mysterious problem.
The macbook cannot access certain sites like facebook and pinterest when my friend uses her home wifi connection.
The problem appears both on safari and chrome.
When she came to my home using my wifi router both sites loaded perfectly so i assumed It was just a random problem. When she went back to hers, it happened again.
Sometimes the browser will pop a certificate error message and oher times just a blank page not loading anything.
The strange thing is that it happens only when using her home router and only on those websites, as far as i know.
I tried to clear browser cache and forcefully accept not valid certificates but no luck...