This article explains how to find and bring back YAPI Dashboard when it disappears few seconds after the start. You can see YAPI in Task Manager but no YAPI Dashboard on the screen.
There are two possible causes for this problem: a) local configuration file is corrupt or b) layout was imported from a workstation with a much larger screen.
To bring YAPI Dashboard back, locate YAPI icon on Windows Desktop Notification Bar – typically at the bottom-right corner –
and select Locate YAPI. Bingo! YAPI Dashboard will popup at the top-left corner of the main monitor.