Only one: To have completed at least one operation on the platform. That way you can tell your guests how Saldoar works and how easy it is to use.
You can withdraw them with PayPal whenever you want and the minimum withdrawal is 15 USD. You can also choose any of the other exchange methods available in Saldoar at the exchange rate of the day, such as Bitcoin, Skrill, MercadoPago, etc.