Can't Proceed - API Error: (#5)

Andy,
If your app isn't in Sandbox and you haven't specified a IP Whitelist in the "Server Whitelist" area of your app, then it may be that Facebook has blocked the IP address your trying from. Is this a new application your setting up, and is your website new as well? It's possible that the previous website on that IP address made Facebook angry somehow and they blocked it.

Is it possible to try running your site from another server (even a backup on your local computer would help). That will help narrow things down a bit. If that doesn't work though, you may need to contact Facebook directly to have them look into the cause. We can give you the contact form, but I'll be honest that they aren't always speedy in getting back. Doing as much testing on your end would benefit you greatly.

Thanks, and sorry for the troubles,
Alex

Andy,
Below are some links to contact Facebook. Since your issue is specific to you, it wouldn't go into the 'general' bug spot, it'd go into something more user-specific, just so you know:
Overall listing of bug report places
www.facebook.com/KnownIssues?sk=app_4949752878

Best guess of where to submit this problem
www.facebook.com/help/contact/?id=244560538958131

On another note, one other suggestion you can try that may be much quicker... contact your hosting provider and see if they can switch your IP address. Usually, this is a routine endeavor (not always). As long as you explain that you think your IP has been blacklisted from somewhere *due to no fault of your own*, they're usually pretty receptive to those requests.

Finally, for more testing, if you want to test your current app on Localhost, just run Autotune on it and it will make the proper recommendations (hit the Refresh button at top). If it works on localhost, or another IP/host, that means it's the IP of your server. If it doesn't work anywhere, it means your app has somehow been banned (not common).

Best of luck, and keep us posted on what you find!
Alex

Andrew,
It's a ridiculous system, frankly, but to add a IP Whitelist you need to add both the server's IP address and the IP address of the computer you are on to the IP Whitelist boxes. I'd recommend adding both IP addresses to both the Update Settings IP Whitelist: and Server Whitelist: boxes.

I'm still not sure that will fix the problem since if Facebook has blacklisted the IP address, it'd be too easy to get around that block by simply whitelisting yourself. If it works though, it's an easy solution and well worth testing.

As for getting your own IP address, what you say kind of explains why the IP is blacklisted. If your address is shared by many (sometimes thousands) of websites on a host, any one of those sites could have caused the block (and still may continuing to be blocking it). As for getting a dedicated IP for SSL, yes, that is generally how it works. An SSL certificate is tied to one IP address and usually that IP address can only go to one server. That server could host multiple websites, but usually just a handful.

If you don't need SSL, that may be a bit of a hassle and expense (if you're host requires you to buy it from them). However, if you plan to use the Canvas, Page Tab, or Requests feature of JFBConnect, an SSL certificate is required.

Hope that all helps, and good luck!
Alex