Yup. Great advice. I should have realized that it was the app as my I2 and my PH4P were both doing it and the iPad and app were the only common denominator.
I got that message several times but it never actually effected my flight altitudes. After a getting that message at the beginning of a few flights I stopped seeing the message. I never did anything to address it and hope that I never have to. I have not updated to the most recent firmware and I haven't decided to do so.