The hLink app should work seamlessly with your medical devices. Should you have any issues receiving data on the app or data not updated to the patient account, please check the following:  

1. hLink app is not running - Check if you are logged into the app and it is running either in the foreground or background. Sometimes the user may have killed the app unknowingly. 
2. If you are taking the reading for the first time after logging in, the medical peripherals need to pair with the mobile device (cell phones and tablets). You may need to take the readings 2-3 times. Once the device is paired and the first reading is received by hLink, the device starts flowing through.
3. Bluetooth is on - Check if you are receiving devices' (mobile/tablet/android box/tv) Bluetooth is on. 
4. Internet connection - Check if your receiving device(mobile/tablet/android box/tv) is connected to the internet using Wifi. hLink needs Wifi, so the receiving device should be connected to the internet using Wifi.
5. Device MAC addresses and serial numbers match -  The MAC address and serial numbers of your medical devices should match with those that are set up in the system. 
   1. The device MAC address and serial number can be found on the label pasted on the original boxes that came with the device. If the box is not available anymore, it can also be found on the label pasted on the device. 
   2. On the hLink app, click the 3 dots on the upper right corner of the app that will show the MAC address/serial numbers set up in the system. This should match, if not, please contact your system administrator. 
6. Check the battery level of your devices - The battery level must be at least 35% to successfully transmit the data. Batteries that were provided by the manufacturer are sometimes of low quality, hence it is not advisable to use them.
7. Signal interference - Check if there are any other nearby Bluetooth-enabled devices that may interfere with the signal between your medical devices and receiving device.
8. Device issue - Sometimes the medical device itself may have issues or may be malfunctioning. Try to power them off/on and take readings, observe if it's working properly displaying data.
9. Receiving device is running too many apps -  Although a rare possibility, remove unnecessary apps that may be interfering with the hLink app.
10. Installed hLink app is an old version - While the app is designed to auto-update, sometimes it might be unable due to security settings. Check your Google Play app, it should be set to auto-update via any network connection.