Guide to Authenticate Google account for Google Analytics plugin.
After activating Google Analytics WD, click on Analytics menu item, which will start Google Analytics account authorization process. Click Authenticate button and login to your Google account.
A window asking for relevant permissions will appear. Click Allow and copy the authentication code from the text input. You will be redirected to Google Analytics WD Tracking page.
Here you can add a web property on your Google Analytics account using current WordPress website. Provide a Name for the property and click Add. You can check and manage web properties from your Google Analytics account, Admin page.
Alternatively, you can click Later and configure the web property any other time.
You can Reauthenticate in Settings section anytime in case you need to use a different Google account to monitor Analytics tracking.