The site was hacked a few weeks ago and there's some security measures in place that prevent automatic classifieds access.
It is a known issue and they are working to resolve it. But there's nothing the mods or you can do at this point other than wait it out until the admin fixes whatever needs to be fixed. That info is per mod Jeff.
I know it sucks, and if that happened to me I would be aggravated. It looks like you posted something about it in another thread a few days ago, so maybe give it a few more days. Also remember you can PM people even though you might have limited space in your box for storing messages. If nothing is resolved after like a week I would take further action, probably demand a partial refund if access is granted, or file a paypal claim if that's how you paid.