Joranlin ID100 Fitness Heart Rate Smart band Smart Bracelet Wristband Tracker Bluetooth 4.0 Watch for ios android (Blue)

I bought this for my 7 year old's birthday. I didn't want to shell out the money for a Fitbit, but he's really been wanting an activity tracker (he really likes numbers). He was super careful with it, but the clasp broke within two days. He was a very sad boy. :(

My husband tried contacting someone, and we have worked with this for says now. It won't stay connected to Bluetooth on android. Will not alert when missed call or messages. I got this as a gift and still have not heard how to fix this. Tracks everything just find but the alerts will not work. I have reset it and also made sure they were switched to on.