Hi Steve! Unfortunately that is an automated message and we don't currrently offer a setting to change the warning time. But I will forward your idea on to our team for consideration. Thanks for the suggestion!
Low Time Reminders

This is absured. I know that my low time warning was 10 seconds but I currently changed to 20 seconds because there was an option to do so. Now there is no option. I want my low time warning to be 5 second.

This is absured. I know that my low time warning was 10 seconds but I currently changed to 20 seconds because there was an option to do so. Now there is no option. I want my low time warning to be 5 second.
As far as I'm aware, there has never been a configurable setting. It's either on or off.

I just created a free chrome extension for low time alerts.
It has:
- Custom low time notifications with a few different sounds
- Optional 5 second countdown
- Optional screen flash if you're hard of hearing
You can find it here: https://chromewebstore.google.com/detail/chesscom-low-time-alerts/ndfkkhkkmekhknheeoecnkogaodjecmd
Hopefully this is helpful for you
Apologies if this is already covered somewhere, I've tried searching for it unsuccessfully.
Is there a way to change when you get reminders about being low on time, i.e. how long before you'd lose that you receive the reminder?
At the moment I get an email if there is less than 8 hours left, but 8 hours isn't long enough in my eyes so I'd like to increase mine to 12 or even longer. Is this possible please?
Thanks in advance,
Steve