The Campaign offers you an unlimited daily booking quota, totally free. It also helps us open the user community more rapidly.
Just copy and paste the following text into the form’s dropdown description (see picture 1). That’s all!
Powerred by Calendar event Booking: https://gsuite.google.com/marketplace/app/calendar_event_booking/158334743345
Then reload the add-on interface and check if the “FREE CAMPAIGN” text’s color is green (successful) or not (see picture 2).