One of the Yeelight Light Strips does not show up on Mi Home app

I have 3 Yeelight light strips. All were added successfully using the Yeelight app and work well through it.
However, only 2 of them show up in Mi Home app. The ones that are visible in the Mi Home app are version light.strip.2 and the one that does not show up is light.strip.6. May be that is the cause?

My Mi Home and Yeelight apps are using the same Mi Id (1551248293) and they are on the same region server.

One more thing - the Light Strip that does not show up in the Devices list on the Mi Home app shows up under Device Notifications and the total device number list. But just not on the device page.

Screenshots:
https://imgur.com/a/pVsmZUI

I have tried:

  1. Reinstalling the apps
  2. Removing and adding the lightstrip
  3. Changing the region for the apps
  4. Resetting the lightstrip