Dear @diogo96 ,
Thanks for reaching out and reporting an issue.
May we ask you to send us the website URL where we can see the popup live?
Please, enable the **Debug Mode** so our support team can check what the issue is.
Follow the steps below to achieve this.
1. Go to Popup Builder settings.
2. Check the “Enable DEBUG MODE”.
3. Click “Save Changes”.
https://prnt.sc/v0kw8q
P.S. Make sure to have the Popup Builder plugin’s latest version activated so you can have the Debug Mode feature available.
Looking ahead to hearing from you soon.