The drop down in the auction house to add a listing doesn't work on my mobile (iphone 5, neither safari nor chrome) but does work on my laptop (chrome).
The bookie drop down to select which sport to bet on works fine with both mobile and laptop. So far just the auction house that doesn't work for me. Haven't tried any others as of yet.
Also so as a side note I was having trouble posting this on my iphone (Safari). The box to type in had a red outline around it no matter what I did.