Do you ever see that error message when your phone is connected to the same local Wi-Fi network as the computer running iCamSource?
The iCam Pro Service is required to connect to your cameras from outside of your local network and to receive notifications when motion or sound are detected. The iCam Pro Service is available either as a US$9.99 one-time purchase, or as a low-cost US$0.99 monthly subscription.
Please make sure the subscription is active in iCam Pro > iCam Pro Store running on your iDevice. If it says Subscribe and you have already purchased the iCam Pro Service, please click Restore.