Race officers that use HalSail on their phones or tablets while starting races appreciate the Countdown page that shows how long there is until the next signal. It says which flag has to be raised or lowered and what sound signal to make. There is a second-by-second countdown and beeps marking the last 10 seconds. Or there were beeps until recently, but then they mysteriously went silent.
It seems that over the last few months the publishers of the main browsers, Safari and Chrome, decided that no audio should be played by a website page until the user had made some physical interaction with the device, such as pressing a button. The Countdown page did not call for any interaction, so the beeps fell silent.
To cure the problem, we have added a new button at the top of the page labelled "Enable beeper". Once the Countdown page has loaded, the user needs to press that button. Just press it once, whereupon it will disappear so as not to clutter the screen. After that everything will work as before, including audible beeps. Don't forget to turn the sound volume up on your device.