1. What is the advantage of having a merchant account?
As a merchant, you would be able to:
- Customize your photo and replace it with something else aside from your Facebook photo.
- Show contact information to the user while checking out.
- After a successful payment of an invoice, user can be redirected back to your website.
- A webhook is generated whenever a relevant event happens to your invoice such as completion of payment.
2. What happens when the user pays more than the asked amount or requests for a refund?
It is the responsibility of the merchant to send the funds back to the user.
3. Are there any query parameters are passed when a user gets redirected to the set Redirect URL?
The invoice ID is passed as query parameter when the user is redirected.