message: Add invalid username to Send Bitcoin
diff: "cost": "Cost",
  "success": "Payment has been sent successfully",
  "noAmount": "This invoice doesn't have an amount, so you need to manually specify how much money you want to send",
  + "invalidUsername": "Invalid username",
  "notConfirmed": "Payment has been sent\nbut is not confirmed yet\n\nYou can check the status\nof the payment in Transactions",
  "input": "username or invoice",
  "totalExceed": "Total exceeds your balance of {{balance}}",
  