After upgrade - getting multiple emails

No clue how it could happen. Could you please submit a support ticket sending us super admin account of your site so that I can check it?

Could you forward a sample email which was received to my email tuanpn@joomdonation.com so that I can check and know exactly what's the email was sent?

Tuan

Ticket submitted and email sent to you, thanks

Thanks. Will check and reply you via support ticket

Tuan