Unable to see ‘Raw data export’ under integration section of Web TimeSheet

Features in Web TimeSheet are permission driven. In order for you to have access to a feature the permission which is assigned to you should have that feature enabled.

Follow the steps to enable the option:
Log into Web TimeSheet with administrative rights.
Click on Administration icon at the top.
Click on Permissions in the left menu.
Click on edit button on the required permission.
Under the System tab go to Integration–>Data Exports and make sure Raw data exports are checked.
Now scroll down and hit Save.