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We are sorry to hear you are having issues. We can't really help much without seeing the log files.
In general, you should be running the latest version which is 3.0.5. We are also recommending updating to iOS 12 if you haven't done so already. These would help the app crashing.
If the aircraft is just leaving the programmed flight mode there isn't much we can do since that is something hardware related. This either happens when you switch the remote out of programmed flight mode or there is an issue onboard the aircraft. This is not something that Map Pilot can make happen.
Which aircraft are you having issues with? What version of Map Pilot are you using? What kind of iOS device are you using? What version of iOS are you using?
Another thing to do is make sure you turn off the Image Footprint feature if it is happening at takeoff.