I currently use WingXPro on my iPad for charts and flight planning. WingXPro uses Duats to file flight plans, but sometimes it says a flight plan was filed, but fss sometimes says no flight plan was filed. Does anyone else have this problem, and how can I work around this? Is there another way to file a flight plan over the internet? Before I used WingXPro I used Foreflight, and before that it was a regular phone call. Also, if I filed directly on duats.com, will it have this issue, or is it just WingXPro?