go to https://sandbox-app.transaction.cloud/ and login to your sandbox account.

create a new one time payment product , from sidebar products then click create product.

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add product name , description and type ( set it as one time payment )

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now configure invoice info

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now add return url and product list url

example product return url

https://yourwebsite,com/ipn?id=TRANSACTION_ID&user=EMAIL&first=FIRST_NAME&last=LAST_NAME&org=ORGANIZATION
you will get this url in admin panel -> general settings -> payment gateway settings page.

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Now you you need to create api, go to API set up page, copy api login and api password and add it into the admin panel..

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