Sign only shows a blue screen

\uD83E\uDD14 Problem

After reboot the sign is only showing a blue screen.

Reboot the sign controller through the start menu.
Check the Sub-net of the sign controller it needs to be 255.255.252.0
If there are more than 125 total configured progressive it will not work. Look at the bottom right corner of progressive manager.
The progressive controller needs to be 20.1 or newer.
uninstall/reinstall Maestro and complete setup again.