Where I can put link to popup with input for promo code?

1. How do I open a pop up window with link click?

How do I open a pop up window with link click?

In “When to show PopUp” block choose “Click on certain link / button / other element” radio button. Copy the shortcode from the first field of this option. Go to your post or page and select required text. Click on create link button in text editor and paste shortcode of popup into the URL field.