Routes don't work when using a subdomain

[gittestcoder]

I'm having an issue where navigating directly to routes doesn't work when using a subdomain.

I cloned your repo, ran the install, changed the "homepage" property in the package.json to my domain and published it to my domain (which looks something like this: subdomain.domain.com). However when I try to go to subdomain.domain.com/about it gives me a 404 error. If, however, I click on the "About" link from the homepage it works.

Any ideas what I'm missing/doing wrong?

Thanks