In order to sync from a device to the Portal, the app must be open while the device is connected to Wi-Fi or 3G.
In the upper left corner of the device screen there will be a small spinner indicating that synching is occurring.
Catalyst syncs 40 data points every 30 seconds. Depending on how many un-synced data points there are, you maybe have to leave the app open accordingly.
Note: If you are collecting data while connected to Wi-Fi or 3G, synching will occur in the background while you conduct sessions.
For additional assistance, please contact Support.