Facebook isn't loading

Hello,
I have a problem with my facebook and I can't figure out how to fix it.

Facebook won't load on my mac while I'm using my wifi at home, it does however load without any problem while connected to a different internet source. Facebook works on mobile devices connected to my home wifi without any problems.

I have cleared all the caches on my Mac, I've tried using facebook on Safari and on Firefox.

I don't know how to fix this problem, can someone please help?

Thanks in advance.

Sara