Trying to apply the 75% off discount

https://preview.redd.it/gwn2yy5fxweh1.png?width=1037&format=png&auto=webp&s=9ee4c1fefefd8b3f59c065e6bf908ea9f445c41a

https://preview.redd.it/ypoiog7jxweh1.png?width=507&format=png&auto=webp&s=deebc79d05989f2d06a11c7e5370f5f26b76b027

How do I know if the 75% off was applied? I clicked the ad in the google play store and then clicked the select a plan blue button, but I don't see the discount applied. Is it supposed to show up in the cart or after you checkout?