With Mobius, the lights are not technically "dropping" a connection because they only form a connection when the app is opened. The rest of the time that they are running, they are running the schedule that you programmed into them when they were connected. I assume you mean that when you open your app, it doesn't see all of the lights. We will have an update coming soon that improves this connection problem. In the mean time you power cycle your light and that will resolve it now showing up on Mobius when you open the app.
As for your lights running different schedules, it's possible that they are not programmed to the same time as one another, or that one of the instances when you opened Mobius and it didn't connect to all your lights, the lights that it did connect to got programmed with a different schedule by you inadvertently.
This is what I recommend:
Power cycle each light
Open the Mobius App
You should see all your lights.
Go to your settings, tap "Time" and then proceed to set your time and date by clicking "Set to Current Time"
This way you force all the lights to be on the same time, just in case that's what your issue is. Again, the lights running at different intensities is not an issue of them not connecting to your app. They don't have to be connected to anything once programmed in order to run their schedule. If they are running in a fashion differently than what you expect, it is a programming issue that should be resolved by the steps above, not a connectivity one.