Add to Chrome
On the Chrome Web Store page, choose “Add to Chrome”.
Install the extension normally from the Chrome Web Store. You do not need to download a ZIP file or enable Developer Mode.
On the Chrome Web Store page, choose “Add to Chrome”.
Click the extensions icon in Chrome and open DeleteComments.
Paste the key received after purchase, e.g. DC-XXXX-XXXX-XXXX.
The license is valid for 365 days and can be activated on up to 2 installations.