Comments not working

(My web hosting admin originally posted this message here: www.sourcecoast.com/forums/jfbconnect/jf...s-not-working#p35723, However this is the account associated with our subscription so I will repost)

I'm seeing some strange issues with the comments around the time we changed servers. Not sure if that's the cause, or something else ...

My Facebook comments on the Joomla articles now say "Warning: <long_url_here> is unreachable.". However, if you try to go to said URL, it loads fine. We've tried rentering the Facebook API info etc, but can't figure it out. Another odd piece, the old articles, created while on the old server are still showing comments, while the new ones are not and are giving this error. I've tried searching through the forums etc and can't figure it out. Nothing else has really changed is the deal.

When I use the Facebook URL Debugger I this info ...

Scrape Information
Response Code: 403
Missing Required Property: The 'og:type' property is required, but not present.
Inferred Property: The 'og:url' property should be explicitly provided, even if a value can be inferred from other tags.
Inferred Property: The 'og:title' property should be explicitly provided, even if a value can be inferred from other tags.

Alex,
Sure thing. I'm just the tech that runs the server and am finally catching up on some OLD tickets that we need to resolve. I'll see if i can have our web developer post here as well to verify account info.

Here's a page that's seeing the issue:
www.jcblog.net/kingdom/righteousness/jes...-making-us-righteous

Here's a page that's not seeing the issue: (posted on old server then migrated with site move)
www.jcblog.net/kingdom/righteousness/what-is-gods-righteousness

(Added by Juli) Also, You can actually post comments to these articles however no notification is sent and most do not show up under the Facebook Comment Moderation Tool... although a very have, so I am afraid these comments will disappear once this is fixed)

Here's some other module info that I hope helps. Thanks, Alex!

Required Extensions Installed Available Status
JFBConnect 5.0.1 5.0.1 This extension is installed and published.
SCLogin 3.0.3 3.0.3 This extension is installed but not published.
Authentication Plugin 5.0.1 5.0.1 This extension is installed and published.
System Plugin 5.0.1 5.0.1 This extension is installed and published.
User Plugin 5.0.1 5.0.1 This extension is installed and published.
Social Extensions Installed Available Status
Content Plugin 5.0.1 5.0.1 This extension is installed and published.
JFBCFan 5.0.1 5.0.1 This extension is installed but not published.
JFBCLike 5.0.0 5.0.0 This extension is installed and published.
JFBCSend 5.0.0 5.0.0 This extension is installed but not published.
JFBCComments 5.0.0 5.0.0 This extension is installed and published.
JFBCRecommendations 5.0.0 5.0.0 This extension is installed but not published.
JFBCRecommendationsBar Not Installed 5.0.0 This extension does not appear to be installed.
JFBCFriends 5.0.0 5.0.0 This extension is installed but not published.
JFBCFeed 5.0.0 5.0.0 This extension is installed but not published.
JFBCRequest 5.0.0 5.0.0 This extension is installed but not published.
JFBCFollow Not Installed 5.0.0 This extension does not appear to be installed.
Profile Integration Installed Available Status
Community Builder Not Installed 5.0.1 This extension does not appear to be installed.
JomSocial Not Installed 5.0.1 This extension does not appear to be installed.
Kunena Not Installed 5.0.1 This extension does not appear to be installed.
K2 Not Installed 5.0.1 This extension does not appear to be installed.
Virtuemart2 Not Installed 5.0.1 This extension does not appear to be installed.
JomSocial - FB Wall 5.0.0 5.0.0 This extension is installed and published.

Thanks for the info. We are using a few security pieces and modsecurity. I disabled modsecurity and tested again, but I will try testing with the websites you posted as well.
Any idea why it would work for older articles previously posted, and not newer articles though? That's the piece that makes it seem like it's not a firewall issue. Thanks for your help!

Thanks for the help! It was a mod-security rule blocking it. Of course, a 2 min fix once you helped me track it down (after hours and hours of man time). The huge help here was telling me that Facebook had cached the older rules. I couldn't figure out why they were showing if it was a security/firewall rule. Thanks so much!