Transaction has just disappeared

Description

Hi There, One of our clients processed a transaction, but used an unlinked email address. We followed the procedure to link the account, and according to the help center it is meant to automatically show on the main account. This has not happened. We click on the original transaction, login as prompted – and the transaction is nowhere. The transaction ID/code can’t even be found. We have been trying to get in contact with customer service for over 6 hours – with absolutely no luck. Does anyone have any idea how to fix this? Thank you!