Joomdle Web Services Issue

So, I'm having the Joomdle Web Services issue that I've seen many others have and I've read through countless posts and haven't been able to figure it out. The weird thing is it used to work fine, I only started getting this issue after upgrading both moodle to 2.6 from 2.3 and joomdle to .94 from .6. The error is the following:

Joomla URL seems to be misconfigured in Joomdle auth plugin in Moodle

*edit* I completely turned off mod_security on the server and it still doesn't work, so that can't be it.

I have re-checked the entire installation twice already and can't figure the problem out.

DONE - Re-check your Joomla URL in Joomdle auth plugin configuration, in Joomdle auth plugin in Moodle.
DONE - Make sure you include http://
DONE - Check Joomla multi-language configuration and enter appropiate parameters in Moodle side if necessary
DONE - Check any mod_security rules that may deny XMLRPC traffic
DONE - Disable any Joomla security extensions you may have installed

DONE - You may also want to visit: http::/yoursite.com/index.php?option=com_joomdle&task=ws.server&format=xmlrpc
If everything is working fine, you should see something like:
XML-RPC Error (1): Access Denied

Anything else it could be that I haven't tried?

for my website use this tuto :

At this point I usually take the "hard approach", and inspect the traffic. Ideally with tcpdump directly on the server by ssh.
If that is not possible, I would try debugging the code directly: for example modifying Joomdle code in Moodle to write to a file the response it gets from Joomla, so you can inspect it.

Many times this message is caused by some non-related system plugin that is spitting out an error, and thus breaking the XML file that should be returned. When XML is not valid, misconfigured url message is shown.