- Go to the Admin Control Panel -> Customise -> Manage extensions
- Disable the extension (do not click "delete data" to keep all your configured questions and answers)
- Delete folder
- Upload the new version
- Enable the extension (this will run the necessary migrations and event updates)
You'll probably get a HTTP 500 error (blank page) because the template event file was removed in version 2.0.1. Restore the files of the previous version and follow the recommended update guide above. The previous version can be downloaded from the "Revisions" tab on the Extension Page.