Please note that you need to disable Facebook/LinkedIn personalization for Advanced Opt-in to work effectively. See how to disable the Social Media here
Now follow the below steps after you disable Facebook/LinkedIn personalization:
Step 1. On the editor, click the Elements button.
Step 2. Click Personalizer Opt-in
Step 3. The properties panel for Advanced Opt-in will open
Step 4. Paste an image URL from an external source for the Logo or select from your computer.
Step 5. Paste an image URL from an external source for the Background Image or select from your computer.
Step 6. Click to enable/disable the skip button on the form.
Step 7. Use this to adjust the form Width and Height.
Step 8. Click the Font drop-down menu to change the font type.
Step 9. Use to adjust Caption alignment to Left, Center, and Right.
Step 10. Use to adjust the Font Color and Size for the form.
Step 11. Use to adjust the Inner Color, Width, and Height
Step 13. Use to adjust the Inner Opacity, the transparency level.
Step 13. Use this to adjust the form Background color and Button Background color.
Step 14. Use this to adjust the Button Font color and Button border-radius.
Step 15. Click the color palette to change the Button bottom border color.
Step 16. Click to change the form Animation effect.
Step 17. Click FIELDS tab
Step 18. On the Fields tab, you can change the Caption.
Step 19. Click + Add Field to add a new field.
Step 20. Click to edit the field title.
Step 21. Click and drag to rearrange the fields.
Step 22. Click to delete the field.
Step 23. Edit to change the Submit Button Label
Step 24. Click to disable Advanced Opt-in. That's it. You're done.