1. Go to Website approval, add your domain
https://vendors.paddle.com/request-domain-approval
2. Go to Checkout settings, add Default payment link
https://vendors.paddle.com/checkout-settings
Add https://quiz.YOURDOMAIN.com/paywall

3. Set up webhooks
https://vendors.paddle.com/notifications-v2
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Click New destination
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Paste webhook address from your web2wave Project settings -> Paddle
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Save destination
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Click "..." and then "Edit destination"
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Copy Secret key and paste it to "Webhook secret key" in web2wave Project settings -> Paddle