Only by running an SQL Query or editing the database data I use Microsoft Access linked to the database to do data maintnance You need to clear the cache after making any changes like this
In SQL it looks like this to set for Paid. Replace 'n' with the Order Id
UPDATE [Order] SET [PaymentStatusId] = 30 WHERE Id = n
(If you need "order processing workflow" to occur (e.g. send emails), it might be a good idea to set it Pending in the DB, and then use Admin UI to set it to Paid. I've never tried.)
Only by running an SQL Query or editing the database data I use Microsoft Access linked to the database to do data maintnance You need to clear the cache after making any changes like this