Interesting... I'm usually pretty good about replying to emails about any problems. Are you sure that you sent an inquiry to help@InstantTVChannel.com
Instant TV Channel does not provide a zip file, instead you get a Pkg file that you upload to your developer account. There are numerous on-screen diagnostics available that can be switched on & off, but these probably won't be of use if the channel is crashing at launch. The #469 update on 4/16/2019 accidentally left in some 9.1-only code related to the new SignalBeacon requirement, but this was corrected the next day. If you did update a channel to #469 all you need to do is update again. Here a summary of all updates: http://www.InstantTvChannel.com/news
The rsg_version flag that speechles mentions is configurable on the Theme page, but it defaults to "1.1" so unless you intentionally changed it, this is unlikely to be the issue.
Clearing the registry by delete+reinstall as renojim suggests is also unlikely to correct this, as the Instant TV Channel code is fairly robust about handling bad registry data, however it won't hurt to try. Each new ITVC channel has a unique Dev ID, only clones have the same Dev ID. So deleting channels that aren't cloned won't make a difference.
If this problem is still occurring, please send the details about your channel to help@InstantTvChannel.com
. Or you can call the support phone # weekdays if this is a "Commercial" channel type.