ajaxUrl javascript variable is incorrect if store code is appended to URLs in public_html\app\design\adminhtml\default\default\template\trustpilot\system\config\admin.phtml and public_html\app\design\adminhtml\default\default\template\trustpilot\system\config\adminmenu.phtml
var ajaxUrl = "<?php echo Mage::helper("adminhtml")->getUrl("trustpilot/adminhtml_trustpilot/ajax"); ?>";
should be
var ajaxUrl = "<?php echo Mage::helper("adminhtml")->getUrl("adminhtml/trustpilot/ajax"); ?>";
ajaxUrl javascript variable is incorrect if store code is appended to URLs in public_html\app\design\adminhtml\default\default\template\trustpilot\system\config\admin.phtml and public_html\app\design\adminhtml\default\default\template\trustpilot\system\config\adminmenu.phtml
var ajaxUrl = "<?php echo Mage::helper("adminhtml")->getUrl("trustpilot/adminhtml_trustpilot/ajax"); ?>";
should bevar ajaxUrl = "<?php echo Mage::helper("adminhtml")->getUrl("adminhtml/trustpilot/ajax"); ?>";
Using version 2.5.505