Learn how to connect Google Analytics to Gridea.
Sign up and log in to the Google Analytics.
Set up a property in your Analytics account by following this doc .
Copy your tracking ID (G-XXXXXXXXXX)
Return to Gridea, navigate to Website -> Setting -> Service integration -> Google Analytics, paste the "tracking ID" that you copied in step 3 and save your changes.
Now you can go to any page on your website, and to view analytics in the Google Analytics system.