Conflicting / incompatible extensions

ZooTemplate templates
www.zootemplate.com/

Symptoms
Captcha image and/or and the captcha reload button on the right side sometimes don't appear. It happens regardless the template current in use.

Cause
ZT Tools Plug-in is ruining the dynamic generated images needed by captcha system.

Solution
Go to Plug-in Manager, select "ZT Tools" and disable the option "Lazy Load".


JotCache
www.jotcomponents.net/web-programming/jotcache/
JotCache 3 corrupts the page source. It has not been tested with newer releases.
In addition, consider that cache systems prevent whatever contact form from working.

Solution
Uninstall or disable JotCache, or exclude it on the page where a Contact Form is present.

RokBooster
www.rockettheme.com/joomla/extensions/rokbooster
RokBooster does not respect the original order of inclusion of the JavaScripts included in the page. That generates JavaScript errors, which prevents Fox Contact as well as any other extensions in the same page, from working as expected.

Solution
Change the compressor. The most of the other compressors work good. I've tested a lot of them, JCH Optimize, ScriptMerge, JBetolo, just to mention a few, and all of them work perfectly with Fox Contact.

WordPress Blog for Joomla
extensions.joomla.org/extension/wordpress-blog-for-joomla

Symptoms
After pressing the "submit" button on a contact form, it does not send any notification message and the user is redirected to the home page.

Cause
"WordPress For Joomla" tampers with the content of the system variable $_SERVER["REQUEST_URI"];
In return, it also introduces a new system variable $_SERVER["WP_REQUEST_URI"] containing the original value of $_SERVER["REQUEST_URI"]. However it is useless for us, since Joomla modules does not look for "WP_REQUEST_URI", but for "REQUEST_URI" instead.

Solution
Disable the "System - WordPress" plugin.


Monte Rosso Template by GLOBBERSTHEMES
www.globbersthemes.com/livedemo/monte-rosso

Symptoms
Many form fields don't work

Cause
The template intentionally removes the JavaScript framework bundled with Joomla, and add its own versions (multiple instances of different versions of jQuery and Bootstrap) that conflicts with other third party extensions (Fox Contact is one of them).
Trying to fix the libraries inclusions may break modules bundled with the template itself.

Solution
Use a different template.