In order to activate your Tinder Gift Card, please follow these steps:

1. First, claim the purchased product on your Kinguin account. 
2. Go to the Tinder website.
3. Log in to your account or create if you do not have one.
4. Tap your profile icon.
5. Select “Promo Code”
6. Enter your Tinder card code.
7. Click “Submit”.

Here you can check how to activate the Tinder Gift Card: