HELP ME PLEASE!!!!

Hello! I work in a high school and a student unplugged the HDMI to my second monitor that had my cue lost on it. 

Now the cue list will not highlight/tell me what cue i’m on. This has never happened before and my company relies on this.

(Note: what’s not showing up is the yellow that covers the cue number)

I can’t find this information ANYWHERE please help me!!

(Another note: this is on a Ion, bought around 2001 and is version: 2.9.2 build: 8)