How to post an add on craigslist from my iPhone?

The app I have that would let me post adds isn't working it keeps giving me errors even though I already upgraded it. Is there any other way to post an add on craigslist from my iPhone? By the way I'm using an iPhone 5 through Wi-Fi to post the add and it's not my Wi-Fi.

Craigslist ad gives u an error right after submitting the the ad when using their app when you see the error click ok then check your spam or inbox folder for the link to post your ad the subject of the email to post your ad ill say POST/EDIT