Dear @mars999,
Thank you for the topic.
I am not sure I understand the problem you are experiencing correctly.?
Please let us know whether you mean the following.?
You have set On Click for the Popup Trigger and by clicking on that particular element the popup can’t be opened on mobile.
Please provide us with the following information for further investigation of your case.?
1. The link, where the given popup is enabled.?
2. Show us where we need to click to open the popup.?
3. Let us know whether you are using a Cache plugin on the page where the given popup is enabled or not.?
If yes, then clear caches for the mobile version as well.?
Looking forward to your reply.
Thank you.