Nonfunctional App, Developer No More?
Nonfunctional App. Looks to me like developer is no more and app has been abandoned.
Endeavor User Reviews
Is Endeavor Safe?
Not enough ratings yet to assess Endeavor.
Is Endeavor Legit?
Endeavor - Gmail, Google Drive appears to be a legitimate app. AppsHunter Legitimacy Score for Endeavor is 80/100.
Based on 80 of 100 points across 7 verification signals from App Store and developer data.