I want to know,
1. How to uninstall turnitin plugin 2
2. and reason behind this error which i experienced while trying to create a normal assignment.
turnitintooltwo/Turnitin Class creation failed
Fault Code: Authentication Fault | File: [dirroot]/mod/turnitintooltwo/sdk/classsoap.class.php | Line: 38 | Message: API Login failed: 'oauth_timestamp'  out of range, valid window from  to  | Code: 0