Fild editor msgbox

EnvelopeGenerator.Form/frmMain.vb

@@ -795,8 +795,11 @@ Public Class frmMain
                 If oDT.Rows.Count = 1 Then
                     Dim oTFA_REG_DL = oDT.Rows(0).Item("TFA_REG_DEADLINE")
                     Dim oTOTP = oDT.Rows(0).Item("TOTP_SECRET_KEY")
-                    Dim oForm As New frm2Factor_Properties(oReceiver.EmailAddress, oTOTP, oTFA_REG_DL, DB_DD_ECM)
-                    oForm.ShowDialog()
+                    If Not IsDBNull(oTOTP) And Not IsDBNull(oTFA_REG_DL) Then
+                        Dim oForm As New frm2Factor_Properties(oReceiver.EmailAddress, oTOTP.ToString, oTFA_REG_DL, DB_DD_ECM)
+                        oForm.ShowDialog()
+                    End If
+
                 End If
             End If