Hello @strarsis

Thank you for reaching out to us!

I believe Popup Maker will work when using Polyang on a site. You could add a targeting condition on the popup and select the page/post ID on where you want to display the popup.

For more insights, kindly refer to our documentation Standard Targeting Conditions

You could also try the WPML plugin and use the Advanced Targeting Conditions extension plugin to target the query string base on the language.

Hope that helps. If your issue is resolved please take a moment to rate and review the plugin.