Fixed the error in the Country.delivery.php adding if (!function_exists('MAX_checkGeo_Country')) { and now a new error
Fatal error: Cannot redeclare max_checkclient_useragent() in /home/NFS-HA/vhosts/pubted.com/public_html/plugins/deliveryLimitations/Client/Useragent.delivery.php on line 28
Fixed, and new error
Fatal error: Cannot redeclare max_checkclient_browser() in /home/NFS-HA/vhosts/pubted.com/public_html/plugins/deliveryLimitations/Client/Browser.delivery.php on line 28
Fixed and now all banners are showing!!
Anyway, I think I will follow your suggestion Matteo