A have contacted Elementor support and they sad there is an error (conflict) in your plugin.
This is error:
editor.min.js?ver=2.5.3:2 Uncaught TypeError: Cannot set property ‘controls’ of undefined
at Object.<anonymous> (editor.min.js?ver=2.5.3:2)
at Function.each (load-scripts.php?c=1&load[]=underscore,shortcode,utils,jquery-core,jquery-migrate,backbone,wp-util,wp-backbone,media-models,moxiejs,plupload,wp-plupload,jqu&load[]=ery-ui-core,jquery-ui-widget,jquery-ui-mouse,jquery-ui-sortable&ver=5.1:5)
at Object.success (editor.min.js?ver=2.5.3:2)
at i (load-scripts.php?c=1&load[]=underscore,shortcode,utils,jquery-core,jquery-migrate,backbone,wp-util,wp-backbone,media-models,moxiejs,plupload,wp-plupload,jqu&load[]=ery-ui-core,jquery-ui-widget,jquery-ui-mouse,jquery-ui-sortable&ver=5.1:5)
at Object.fireWith [as resolveWith] (load-scripts.php?c=1&load[]=underscore,shortcode,utils,jquery-core,jquery-migrate,backbone,wp-util,wp-backbone,media-models,moxiejs,plupload,wp-plupload,jqu&load[]=ery-ui-core,jquery-ui-widget,jquery-ui-mouse,jquery-ui-sortable&ver=5.1:5)
at Object.e.(/wp-admin/anonymous function) [as resolve] (https://www.________.___/wp-admin/load-scripts.php?c=1&load%5B%5D=underscore,shortcode,utils,jquery-core,jquery-migrate,backbone,wp-util,wp-backbone,media-models,moxiejs,plupload,wp-plupload,jqu&load%5B%5D=ery-ui-core,jquery-ui-widget,jquery-ui-mouse,jquery-ui-sortable&ver=5.1:5:29192)
at common.min.js?ver=2.5.3:2
at Array.forEach (<anonymous>)
at success (common.min.js?ver=2.5.3:2)
at Object.i.success (common.min.js?ver=2.5.3:2)
