I am following this manual and I don't have the Developers Option in my Pebble App Setting when I look at Application Manager. Any idea why is that and how I can find it? I have a Samsung Galaxy S6.
Pebble app > Settings > Developer Options
and tick Enable Developer Connection
.
There's no such 3 lines for the app setting as shown in this link.
The manual you linked to seems to be the right set of steps.
The screenshot you posted though indicates you do not have a Pebble connected, which may be the root of the problem. I believe the developer option only appears if a Pebble watch is actually connected. Once its enabled, it will stay that way though.