So after trying some of the stuff ya'll said to try, I kept troubleshooting on my own. I was able to successfully re-pair the grill with my network by doing the following: 
Forget the Wifi Network
Uninstall and reinstall app
When asked to login in, I instead created a new account, using a different email address. 
I then set up the grill as if it were new, with WiFire setup and naming the grill again.  
After that, it is connected to my app, and has the V 2.0 software downloaded. 
I have yet to cook on it, but so far it seems to be working just fine.