Sending money with Paysend Libre

• How to make a transfer via Paysend Libre?
• Do senders and recipients have to be registered Paysend users?
• What if I send money to the wrong person? Can I get my money back?
• What if I change my mind after sending a payment? Can I get my money back?
• My recipient hasn’t accepted my payment. Will I get it back?
• What if the SMS notification is not received by the recipient?