Unable to get Direct messages of a specific twitter user



I want to get twitter direct messages and show on my Qweboo
application. I have updated permission from read/write to read/write/DM
and also re-authorized my token. But still i am not getting direct
messages. I am using this api

Error returned : stdClass Object
[code] => 93
[message] => This application is not allowed to access or delete your direct messages.


I am using same account for my Qweboo application.