If you find your Spacetalk watch screen frozen or unresponsive to touch, you can resolve this problem by performing a soft reboot.
This forces your watch to switch off and back on, without needing to press any of the prompts that appear on the screen.
Please find instructions on how to do so here
Once this has been completed, your watch should function as normal. However, if you find that the issue does persist, please click on the live chat icon in the bottom right corner of this page.