Hi Nikola, thanks for the last update and the fixis within. but since this is installed on my machine i ´will not receive confirmations mails and the twillo integration is also broken. the form self is also broken, because after submit the form it´s loading without any success message. i found the following in the logs:  

AH01071: Got error 'PHP message: PHP Warning: include(/var/www/vhosts/mydomain/new/wp-content/plugins/easy-appointments-connect/vendor/composer/../twilio/sdk/Twilio/Rest/Client.php): failed to open stream: No such file or directory in /var/www/vhosts/mydomain/new/wp-content/plugins/easy-appointments-connect/vendor/composer/ClassLoader.php on line 443\nPHP message: PHP Warning: include(/var/www/vhosts/mydomain/new/wp-content/plugins/easy-appointments-connect/vendor/composer/../twilio/sdk/Twilio/Rest/Client.php): failed to open stream: No such file or directory in /var/www/vhosts/mydomain/new/wp-content/plugins/easy-appointments-connect/vendor/composer/ClassLoader.php on line 443\nPHP message: PHP Warning: include(): Failed opening '/var/www/vhosts/mydomain/new/wp-content/plugins/easy-appointments-connect/vendor/composer/../twilio/sdk/Twilio/Rest/Client.php' for inclusion (include_path='.:/opt/plesk/php/5.6/share/pear') in /var/www/vhosts/mydomain/new/wp-content/plugins/easy-appointments-connect/vendor/composer/ClassLoader.php on line 443\nPHP message: PHP Fatal error: Uncaught Error: Class 'Twilio\\Rest\\Client' not found in /var/www/vhosts/mydomain/new/wp-content/plugins/easy-appointments-connect/src/twilio_logic.php:121\nStack trace:\n#0 /var/www/vhosts/mydomain/new/wp-content/plugins/easy-appointments-connect/src/twilio_logic.php(169): EAC_Twilio_Logic->init_data()\n#1 /var/www/vhosts/mydomain/new/wp-includes/class-wp-hook.php(286): EAC_Twilio_Logic->process_appointment('492')\n#2 /var/www/vhosts/mydomain/new/wp-includes/class-wp-hook.php(310): WP_Hook->apply_filters(true, Array)\n#3 /var/www/vhosts/mydomain/new/wp-includes/plugin.php(453): WP_Hook->do_action(Array)\n#4 /var/www/vhosts/mydomain/new/wp-content/plugins/easy-appointments/src/ajax.php(998): do_action('ea_edit_app', '492')\n#5 /var/www/vhosts/mydomain/new/wp-content/plugins/easy-appointments/src/ajax.php(482): EAAjax->parse_appointment(false)\n#6 /var/www/vhosts/mydomain/new/wp-includes/class-wp-hook.php(286): EAAjax->ajax_appointment('...\n', referer: https://mydomain/wp-admin/admin.php?page=easy_app_top_level AH01071: Got error 'PHP message: PHP Warning: Cannot assign an empty string to a string offset in /var/www/vhosts/mydomain/new/wp-includes/class.wp-scripts.php on line 426\nPHP message: PHP Warning: Cannot assign an empty string to a string offset in /var/www/vhosts/mydomain/new/wp-includes/class.wp-scripts.php on line 426\nPHP message: PHP Warning: Cannot assign an empty string to a string offset in /var/www/vhosts/mydomain/new/wp-includes/class.wp-scripts.php on line 426\n', referer: https://mydomain/wp-admin/admin.php?page=easy_app_top_level