Genn2 key pad lost connection

Hi so I have a second generation key pad. The red connection warning light can on last night on the pad. I’ve tried to reconnect the device but unfortunately it won’t reconnect. The battery on the pad is over 50%. I’ve removed the device and tried to re add it. During the reinstall it ask to connect the power connector. Usually the battery indicator comes on the screen but this time nothing and when I click on the app to say connected the process fails and won’t connect the device again. I’ve also reset the pad using a small pin in the reset button in the rear but again won’t connect. It’s less than a year old.