A couple of issues here:
First, the title points to the wrong concern. There is nothing wrong with his ForeFlight. It worked. There is no reason to ask FF to solve the "problem" and issue fixes. ForeFlight still would have been a great source for a current chart and a great source for the airport info on his destination.
Second, his lost "trust" should be in his (OP) ability to manage, care, and feed the technology (IPad and Bluetooth connections) in the plane, or in his recliner in his house. Just, as I'm the old days, we still have to mange and spend time. Instead of buying new sectionals every few months, we now need to download new info from ForeFlight and from Apple. These are pretty straight forward, but, they have to be done, and understood what changes happen to the Settings with each time Apple sends a new iOS.
Third, as for not using the 430 in the panel, I too went thru a "long time away BFR" and didn't understand how to use the GPS in the panel. During the BFR work, we worked more on plane skills, and the GPS instruction was the instructor spinning knobs and magenta lines showing up. He tried to teach it, but with a plane motor running, you don't have the best environment sitting on the ramp. I learned to use the panel mount GPS by going flying, doing a 2 hour cross-country by myself and spinning the knobs, eventually figuring out how to use it. Flying is a better learning than downloading simulators and dry manuals. (I also had ForeFlight, so I had plenty of backups.). Go fly, learn the 430, you will come to love it.
Fourth, for those who refuse to use the iPad in flight, I scratch my head. There is a ton of information in that device, and, it isn't unreliable. Every cross country it takes 2 minutes to enter the route and have ForeFlight plan the route. Do it at home, turn it on when you get to the airport, and you have a great "pencil and chart" drawn for navigation, dead reckoning, pilotage, etc, plus all the AFD info, plus scratch pad, plus camera, plus...etc... There are many things FF does better than a pencil and chart can ever do, example is rubber banding.
Fifth, as for decision to scrap the flight, who cares? He gets that decision. It is obvious he is still in the learning mode, and that is awesome he is cautious, and, awesome he knows he is still learning and not invincible. I can't imagine not being able to fly 80nm without navigation aids, as I would just IFR it, I follow roads, rivers, and railroad tracks, and I pretty much know all of them within 80nm. As soon as he gets more comfortable, he should be able to fire up and fly 80nm without any navigation aids but looking out the window and enjoying watching landmarks pass beneath his plane. He ain't there, but he will get there, someday.
Sixth, as for the BFR quality, I think each pilot owns those, and should provide input into what needs refreshed. My next one will not be planning 2 hour cross countries and dealing with imaginary radio failures. I have real world, actual areas I want to improve and be trained/reviewed.