Secondly, we've been getting hacked for a year from spammers, despite the JCal Pro reCaptcha. They looked at it and told us somehow people are logging on and posting them, which is NOT what is happening.
Also slow response to tech things.
I'm sorry you've had a poor experience. Just a quick additional note to let you know that we've implemented this END TIME feature based on your feedback and users can use it in this mode or in DURATION mode. That way we have back-compatibility.
If you chose to try JCal Pro again, don't forget to check the new responsive calendar theme.