It's unfortunate that you ran into this issue.
Without any logs it's hard to know exactly what is going on, but there is at least one actions that might solve your problem;
Resetting Digital Factory on your S5 will be a surefire way to ensure the grouping feature is turned off. However this will mean that you will have to reconnect your S5 to the network, and you will loose all data on the machine (Print history, print data on the dashboard, etc)
If the problem persists after this, or resetting is not an option for you, we kindly ask you to add the logs