that’s what I wanted to know and hoped for as I am going to apply with a different countries bank account than my passport origin. So it seems there is no issue.
No, the seller wants to see money and the registration office wants to see a residents certificate which you will get with any permission to stay or visa which has still 30 days before expiry.
So it seems you finalized your e application before you arrived in Vietnam - without the entry stamp - I would never have dared to do that. But good to know they come back relaxed.