Never pay down a deposit in a bank account until you have met the seller, seen signed a purchase agreement.
No serious private advertisers ask for a down payment before you meet.
Receiving an email with an in-scanned ID does not mean that you have identified the sender. You do this on the spot, when you sign a purchase agreement.
I will get rid of a large box with dimensions of at least 60x60x60 cm. If there is still polystyrene inside, it will be even better. We will pick it up from any area