If you want to Edit your current pop-up, maybe you want to add text or form, you can see this article.
1. On your dashboard, click "PopUp" from the left-hand navigation menu
2. On the PopUps menu, just select your current popup you want to edit.
3. You will see the Edit PopUp menu, so, you can edit or update your popup content here. Maybe the text, image, or form.
4. Once it's all set, click the save.
5. Your popup now is updated.