For most of the templates in PopupAlly Pro, we offer responsive views.
You may find the responsive view settings under “Style Settings”, and then selecting the tab with the mobile names:
Mobile (Responsive) Views for Fluid Templates
If you choose Fluid Templates, you can find the mobile/responsive views under Style Settings > Customization elements.
You may add new responsive views by clicking the ‘+’ button next to “Desktop” tab, or directly modify the exisiting ones coming with the pre-load fluid templates.