If you'd like to use Check-Ins without printing labels, remove the labels in your event or location. When an event or location has no labels attached, people can check in, but no labels will print.
All printing is governed by the labels you've added to an event or a location. So, if you want to make sure no labels are printed, make sure you remove all the labels from your event.
From the Labels & Locations tab of the event, start by removing the labels from the very top tier.
Remove the label from the event tier by following these steps:
Click Add/Edit Labels.
Click the trashcan icon.
Removing the labels from the event tier removed the labels from all the tiers except those which are added to that specific location/folder. To ensure those labels don't print, remove the labels from the remaining tiers.
If you've removed labels, but you are seeing the No Printer Connected message on an Android or iOS station, clear the default printer in the settings and re-launch the app. The error is likely appearing because the station was previously connected to a printer and lost its connection to that printer. Once the printer is cleared, the message will no longer display.