Hi Mary,
Thanks for coming back to me.
I've checked and it looks like we are on 2.8 - I will give our devs a shout about getting us up to 2.9. I gave it a whirl on the sandbox site and it worked OK - the course is "Meta link test".
I've included a screenshot of the settings for the plugin, I'm not sure of any other settings that might affect it?
Thanks,
Jamie