Problem Saving Ads using Ad Module

[TGApophis]

I'm having problems with the Ad Module in 5.2.4. I can create a new Ad Module but I can't add any ads to it. When I add an ad and try to save, I get an error 403 in Site Builder. When watching the actual Apache logs, I do not see a corresponding 403 being logged. Has anyone experienced a problem like this?

Debugging in Chrome I see the following;

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POST https://www.tacticalgamer.com/ajax/ai/ad/save 403 ()
send @ jquery.js:8630
ajax @ jquery.js:8166
vBulletin.AJAX @ footer-rollup-524.js:184
(anonymous function) @ VM942:2
dispatch @ jquery.js:4435
r.handle @ jquery.js.4121
vBulletin.AJAX Error callback: //www.tacticalgamer.com/ajax/api/ad/save

----

Additional Information:

vBulletin 5.2.4 (DB Upgraded from 4.2.4 with clean 5.2.4 Install)
PHP Version - 7.0.8
MySQLi Client - 5.0.12-dev
MySQL Server (Remote) - 5.1.73

No Addons Installed.
Only Default style being used.
English Language used.
No Error messages on screen.
Browser - Chrome 53.0.2785.116 (64-bit)
Caches have been cleared.

[TGApophis]

Update:

If I don't actual use my real ad tags, and instead just put some plain text in the Ad unit, it will save and operate properly.

If I try and add the actual javascript tags to the ad unit, I get the 403 error.

[In Omnibus]

Do you have JS turned off in your browser? Do you have an ad blocker? I had that issue recently.

[TGApophis]

JS not turned off, no ad blocker on my test machine. I think I have it figured out; It might be an issue with the CloudFlare WAF blocking the ability for me to actually POST javascript back to the server. I'm whitelisting my IP to test now.