Hello,
Sandbox accounts conduct virtual transactions, they don't contain any real-world money. You should not add or attempt to add any real world financial information to a sandbox account, if you have already done this remove it.
If someone has attempted to send you money, ask them to check their account activity to locate the transaction and click on it to view it's details and if the status of the transaction shows "unclaimed", then the can click on the "cancel" button to cancel the transaction and re-send the transaction through the correct environment (LIVE/PRODUCTION) so that the transaction reaches your real-world account.
Transactions conducted within our sandbox environment cannot be transferred to our live / production environment.
Thanks !
Was my post helpful? If so, please give me a kudos!
