Try uninstalling, and then re-installing the app. See if you can reconnect after a fresh install.
It's the o-ring under the glass (or whatever) bottom of the bowl. Yours shouldn't look broken. There's no reason for it to have any gaps, and given that it's not user-exposed, unlikely to be suffering from any usage stress. Moreover, any real gap in the ring would probably cause you noticeable issues pretty quickly, i.e. material would migrate from the bottom of the bowl into the FF itself and hit the heating element....I'm guessing you'll know if that's happening.
All of which is to say your ring is probably unbroken and the gaps may be an optical illusion or trick of the light hitting the inside of the bowl.
More, including a pic:
http://fuckcombustion.com/threads/the-firefly-2-vaporizer.20281/page-88#post-973247. (If you can post a pic of yours, that would help.)