Hi Launch,
I switch to Airplane mode before anything else. There are many reported instances where an incoming phone call will cause an app crash.
I received a text around the time of the app glitch. Not 100% sure it caused it, but i'm willing to assume it was that in conjunction with other errors like not switching flight modes to try and regain control that connectivity couldn't be restored.
I use my Ipad when flying the I2 and it was the first time connected to my phone using Litchi. I dont have Litchi on the Ipad yet.
This is why you try new things away from everyone.