Hi,
Is there something in my system preferences on the mac just changed?
I am saying this because all other computers using the same keyboard maco is working.
Howdy, welcome to the forum! As you might have already figured out, this is a great community full of people who love to help.
Found image actions are prone to breaking for a variety of reasons. For instance, the position of the image, if dark mode is enabled/disabled, if the screen resolution changes, and many more. Did you update and apps or the OS itself when the macro stopped working? Did you make changes to any app or system preferences?
If possible, post the macro itself so we can take a look at it and see what might be going wrong. As one of the moderators likes to say, "If we're not testing we're guessing, and guessing often wastes people's valuable time". 
If you need help on how to post the macro, just let us know and we can walk you through it.
If you haven’t had the opportunity to read this tutorial, I highly recommend it. It will help you get the most help for your question.
Tip: How Do I Get The Best Answer in the Shortest Time?
-Chris