Why can't I place an ad in the classifieds??

I'm having trouble trying to advertise my s3 in the classifieds as the time has come where I could really do with a 5 door car.

I tried placing an ad 3 times last night and not one of them worked. I filled in everything I should of done, and also uploaded 6 photos, but everytime I submitted the ad I'd get the green loading bar work it's way to the end, then freeze for ages, and then the screen would jump to the step 1 of 3 page of placing an ad, and my ad is no where to be seen!

Can someone help me as it's sooooooo frustrating!!

Thanks a lot,
Az