Follow along with the video below to see how to install our site as a web app on your home screen.
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I've seen issue also.
The back button has to be hit several times, to change back to previous screens.
Double taps work for me
And highly suitable for this site too....
Check the little box next to where you type your name and password. That will keep you logged in.
The little box says "Remember me?".
Checking that box when logging in solved this problem for me.