This does not work – iFile Review

I have an up to date iPad Pro, 10.5 - iOS 11.3.1. I was able to import a small Numbers file to test. When selecting “Open In”, nothing happens. So, I can add files, but not do anything with them other than emailing? Also, support seems non-existent, since tapping on the “mail” icon also does nothing. They do not list a web page that I can see. I will request a refund. I just bought the app a week ago. (May, 2018)
Review by 3MacMinis on iFile.