Android Limitations?

Hi there,

Just had to pull out my older more reliable mobile on Android 4.1.1 Jelly Bean. Downloaded the ERPNext App and it hangs once it gets past the Login details, just a white screen with ERPNext in the middle.
Next I jumped over to the latest version of Chrome and tried to access instance from there and even worse, no login. Hit the bars in top right, My Account, Logout and Login come up. Hit Login and nothing. Hit logout and it says you have successfully logged out. Hit My Account and am asked to Login, so hit the button and nothing.
Seems odd that my other mobile, I could access both mobile and web through Chrome, so is there an issue with a particular Android Version?