Excuse my ignorance, first time poster, first time Google App
Developer...
I created an app but when I access it from my boss's computer (and
about 10 other computers) it redirects to zimbio.com. However, I am
able to access it from my personal computer and work computer.
I do not have any code
I'm pretty sure Google is not just randomly sending your users to some
other site. ;) Maybe you've got some bad DNS entries, or need to
switch DNS providers.
You app can be served without forcing users to log into anything.
That is totally up to you.