Unfortunately, I have to conclude that Manager does not work in macOS 10.14 Mojave. I hope for a quick update, because the entire administration of my company runs on this.
What does your screen shot show? What did you do before capturing it? I ask because the “Manager” window title never shows when the program is functioning correctly. So it is not possible to diagnose what went wrong.
What version are you running? Do I assume correctly you are using the desktop edition?
There is already a topic for this issue
I have the same problem!!
Seems like Manager stopt working since i had the MAC Mojave update… All I get is a white screen when starting up manager…
Anyone got manager working under Mojave?
Update your software. The Mojave incompatibility was fixed at Manager version 18.10.29. See https://www.manager.io/desktop/releases/. That was 23 updates ago.