Sorry that you have trouble with the setup.
Due to Anki being so flexible, a few set ups have to be made for everything to work and it doesn't work out of the box. I would recommend that you at first select the "Migaku Japanese" note type in the left of the two drop down menus in the orange field (I assume you are learning Japanese).
Then at the bottom you should uncheck "Add cards automatically".
You can also use the default card type, but then it has to be set up first.
This video goes over the setup in more detail:
If you still have trouble, you can also join our Discord and ping the mods, and we can trouble shoot. (https://discord.gg/JR5NrTTFhF)
If you still want a refund, if you are within the first two weeks of your purchase, you can send an e-mail to email@example.com to get your refund.