Hey, @ismailalabou . I’m doing great, thanks! Hope you are well too.
Thank you for sharing this information. I’m happy to clarify to prevent any confusion around it.
A real transaction is one where the payment gateway is active in the checkout (ie. not in test/bogus mode). A valid credit card is used to make a purchase, and the charges applied to it are legitimate. The steps to refund the order would then need to be followed if the transaction was for testing purposes, because it was a real transaction.
That being said, a development store is a free account for Partners that allows them to create online stores for their clients. The inability to process real payments is a limitation on a development store, and so only transactions with a payment gateway that is in test/bogus mode can be done. In order to be able to use the checkout for real transactions, the store would need to be on a paid plan, ownership transferred to the client, and the payment gateway not be in test/bogus mode. More information about this is found in the Partner Doc for Testing orders in development stores.
Further to that, the third screenshot you provided is for the Paypal gateway specifically. Paypal does not have a test mode for the gateway, and so only real transactions can occur; Even for testing purposes. Therefore, since the checkout is inactive during the trial period, no test mode transactions can be done using Paypal; choosing a plan is the way to enable the checkout and thus allowing for real transactions to occur.
Does that make sense?