Welcome to Justanswer.com, my name is ***** ***** I will do my best to assist you.
First, can you check the version of mac osx on the machine thats not working with scrabble, here is how to check.
Click the apple sign at the top left of your screen, then click about this mac. And then where it says version, send that to me as a reply.
Also, can you tell me what browser you are using to access the scrabble game or linnks.. Such as Safari, Google Chrome, Or Mozilla Firefox.
Thank you for your response,
Dustin S.Senior Technician and Network Switching Systems Operator / Maintainer.