Hi Mark,
Yes the blue and red arrows are the visible alerts, you are supposed to open a trade just after the close of a candle which has an arrow on it.
The indicator will one give one email alert and then no more until you restart it. In other words, it will continue to show the alert arrows for all subsequent alerts but it wont email or alert you in any other way. The best way to reset it after you get the first alert is to just open and close MT4. Also you wont get any email alerts sent out if you don't have the chart open (such as if you are looking at a different profile that doesn't have your cowabunga charts in it).
So I suspect that you may have had one email / sound alert and then no more subsequently because you didn't reset the system after the first one. I forgot to mention this behaviour previously.
Good luck, I hope that helps, regards,
Pipalot
