Diane,
Instant TV Channel does not store your videos. It sounds like you're using AWS to host (store) your videos, although there are several other less expensive hosting solutions that you may want to consider. If you would contact me at help@InstantTvChannel.com I'm sure we can resolve your technical issues.
You may also want to consider using the SDK publishing method instead of the Direct Publisher publishing method. SDK offers a larger selection of on-screen options and monetization options. When using Instant TV Channel the SDK publishing method is just as easy as using Direct Publisher, and most changes made to a public channel will appear instantly instead of having to wait for Roku to update your Direct Publisher feed. The Direct Publisher update delay may be preventing you from immediately seeing the changes that you have made.
Scott
www.InstantTvChannel.com / www.InstantSubtitles.com - 717-441-4386 - Build a Roku SDK channel in 15 minutes! Easily and inexpensively generate subtitles!