Let people try this app befor you buy. I know you don't allow that because the app is missing the most basic of functions and nobody would ever buy this app after trying it.
If you are not happy with your purchase you can get a refund by visiting https://reportaproblem.apple.com
The app is free to try for 30 days if you sign up for Channels DVR.
There are thousands of happy customers that would strongly disagree with you.
I bought the app after trying it. I don't daily it like I used to but I don't regret buying it.