To delete the 2 offline devices and view the normal one in the devices list, you can try the following steps:
1. Open the Watchpower iPhone app and go to the devices overview.
2. Identify the two offline devices and make a note of their names or identification numbers.
3. Exit the devices overview and go to the devices list in the app.
4. Find the option to manage devices or settings within the devices list.
5. Look for the option to delete or remove devices.
6. Select the two offline devices you want to delete and confirm the deletion.
7. Once the offline devices are removed, the normal device that was not appearing should now be visible in the devices list.
If these steps do not resolve the issue, you may need to consult the app's user manual or contact customer support for further assistance.