It rarely happens that a KiddieAlarm starts flashing blue while it operating normally. In this rare scenario the KiddieAlarm has run into an issue and out of safety precaution it resetted itself to factory defaults. However in your KiddieAlarm application you will see your device, though with an offline notification. The good news however is that while your KiddieAlarm was reset, all your settings have been saved in the app. No need to set it up again!
By clicking on the offline notification you will be asked to enter your WiFi information again. Doing so will make the KiddieAlarm connect to your WiFi and bring it back online. Once online it will get the proper settings and continue operation as normal.