Popup Pro not working

On aaronperreault.mywriting.network, which is mapped to aaronperreault.com, Popup Pro is not showing popups. I've tested the plugin on another site in the network and it's working fine there. The popup previews fine on this subdomain. I'm using Cloudflare for the main domain and have set that to development mode. Also using Litespeed caching on the server and have cleared that cache as well. Have tried in multiple browsers. Popup blocker has been disabled. I've also tried switching to default Twenty Sixteen theme, and while you can see the popup in the theme preview, you still can't see it on the live site. It's just not coming up. Help! Support access has been granted to the network.