It is possible that when booting up, the keyboard or mouse fail to be recognized by the computer. This is normally the case when all the power is cut to the computers, and they all try to boot at once which can also make the mouse or keyboard on one lane get picked up by the computer on another. Make sure you have constant on power to the computers and they are not switched off.
We have also seen locations where they just had power outages in the evening… just a few seconds, but that would cycle all the computers at once and cause the mouse / keyboards to mess up. If you have that issue, think about putting in a batter backup on the line for the computers.
To re-establish the connection, go to computers one at a time. Make sure they have good batteries in them, and then try unplugging the dongle. Wait 30 seconds, and plug it back in.
If that doesn’t work, try rebooting the computer. Ctrl + C and your code to close the app. Then click the blue bird at the top left, and choose leave, reboot. If unsuccessful, try rebooting without the dongle, then plug it in. After the connection is established, it should not drop during normal use, but if it does, run through the same series of steps again.
It is possible that a unit stops working – after all a keyboard can go out in an office, and an axe throwing facility with people accidentally spilling drinks in them, dropping a mouse on the floor etc., is even worse on them. That’s why we send a spare when you purchase, and if needed, you can go buy any wireless keyboard and mouse that uses a dongle and replace it if need be.