I don't know what examole is.
Anyway, go back to something that works, but first of all update your BLE extension.
Make a copy of your app by using saveAs and then import the latest BLE extension (see it here): Extension updates
Just download it and import as you did before, it will automatically update the older version.
Then, wipe out everything in your app except the code for connecting the device.
Just use the companion and do not build the app for now. It makes your life a whole lot simpler.
In your screenshot you have indeed some blocks to recieve values from the device, but do you ever get any values?
If that works, ask yourself, how does the communication with my device work? Do you send it a request, if yes how? If not, how is the device supposed to communicate?
If your story is right, you just use the bytesrecieved block and you should see new values appear every 10 seconds.
Maybe you can point to the doc of your device.