This is quite interesting, my custom CSS is only being applied to my theme on a mobile when that mobile is on a wifi connection. Over 3G it goes to the theme's default responsive layout.
I can go on the page right now on wifi, click re-fresh and see the styled version. Disconnect wifi refresh and then see the unstyled theme. I can do this on/off however many times as I want and the result is always the same.
I've tried it over home, work, public wifi networks and many areas with different 3G connections and the effect is always the same. wifi off, styles off.
The blog I need help with is iknowdavehouse.wordpress.com.