How long has it been since the devices were paired with the controller and not visible on Alarm.com?
If a schedule fails to activate, the first step to troubleshooting would be to edit and save the schedule again, sending it to the panel. Have you tried this yet?
If you resend multiple schedules, (or when first setting up new ones) allow a few minutes in between schedule creation so that only one schedule is transmitted at once. Time-based schedules require the most data as well as the most memory on board your controller