If there are no power or cadence readings being displayed for a bike during your class, you need to figure out where the connection loss is occurring. Follow these basic troubleshooting steps to see if you can narrow down the cause.

Has there recently been a power meter replacement on a bike?

Occasionally the Stages Cycling bikes require replacement power meters. When this occurs, the ANT+ ID needs to be updated within StagesStudio as well. The ANT+ ID is how Stages Studio is associated with a certain bike. 

Does the power meter pair to the console?

Turn on the console by pressing the stage button and pedal/ride the bike. If the console is displaying power, then the power meter is paired to the console correctly, and this indicates the issue lies in the pairing set up with Stages Studio. If the power meter is not displaying power, see: Pairing the power meter with the console and Changing the batteries

Is the power meter correctly entered in Stages Studio? 

Alternatively, is there a digit missing in one of the ANT+ ID numbers? The ID should be 5 digits, including a zero before any 4-digit ANT+ ID. Ask your club admin to edit the ANT+ ID number within Stages Studio.

Please click on this link for additional questions and information regarding the Stages Power meter.