Currently I am working with the coupon code field via the add-on recently created here https://github.com/curtismchale/Coupons-for-Gravity-Forms/
At this time there is something wrong with the field if you attempt to place it on another page other than Page 1 of a multi-page form.
When using it on Page 1 and moving the next page of my form the value of the entered field disappears as if it isn't holding the value or keeping it stored to apply to the final page.
Is there anyone that may know what that could be happening and a possible fix for that? The developed mentioned it was a bug with no ETA on an update of any kind which leads me to believe it may not be well supported here in the future.