Problem with widget - WordPress - iPhone not open

Hello, 
I have in my website developed with WordPress the videoask code embedded as a widget (milanocosmetics.it). 
We have the problem that on iPhone when you click on the widget icon it doesn't open.
Is it necessary to add some code for iOS compatibility?

1<script>
2window.VIDEOASK_EMBED_CONFIG = {
3  "kind": "widget",
4  "url": "https://www.videoask.com/XXXX?hideplay",
5  "options": {
6    "widgetType": "VideoThumbnailExtraLarge",
7    "text": "",
8 "border-color": "#e2c182",
9    "backgroundColor": "#e2c182",    "position": "bottom-right",
10    "dismissible": false,
11    "videoPosition": "top center"
12  }
13}
14</script>

Thank you very much 
Best regards