Can't use Google Analytics Statistics Module - Impossible to login
Turns out this module is no longer supported and it appears many others also have problems authenticating with it. I recommend NOT using it. I also tried Google Analytics Statistics Counter module, and while I was able to get it setup it wasn't as intuitive as I'd hoped so I just used the 'Statistics' core module, even if it's not the 'preferred' choice performance-wise. For now it will do.