If you are not present in any of these restricted states and are still getting the same error, please follow the steps below to try resolving the issue.
Turn OFF data/wifi - Turn OFF GPS - Turn ON your Airplane/Flight Mode - Close your My11Circle app from apps running in the background.
After removing the app from recent apps:
Turn OFF Flight Mode - Turn ON data/wifi - Turn ON GPS and then open theMy11Circle app.
Below is the GIF on how to go about the above steps.