Please contact us through the qtox tool  

Download qtox https://github.com/qTox/qTox/blob/master/README.md#qtox 

If you can't contact us, please contact some data recovery company(suggest taobao.com), may they can contact to us.

Add our TOX ID and send an encrypted file and 'Sorry-ID' for testing decryption.

Our TOX ID: 3D7889AEC00F2325E1A3FBC0ACA4E521670497F11E47FDE13EADE8FED3144B5EB56D6B198724