Quote Originally Posted by helloworld2 View Post
Do upgrades happen when the base is opened for the first time after 90 days, or just when the base has been left alone for 90 days. I am looking at an old TH13 clan member in my friends list who gave up a while back and was curious how the free upgrade actually worked
Read above.. It is for returning players.. Someone that has not logged on to the account for 90 days.
It wont start anything new, so a max for level account wont get the upgrades, but should still get the 5 day boost I would think.