Word Styles, when using EndNote Web, only shows first part of alphabet

We’ve just started trying to do Endnote Basic courses and have found that when you are in Word, having set preferences to the Web version, you only see the styles A throught to partial D’s.  Plus whatever style I’d last used in the fully installed version. 

The support team have given the solution which is to set my Style Favourites in the Web version before opening Word and then I will see just these styles. That didn’t work in my training session so the advice has been to clear the Cache as well.  This seems of work on the one I’ve tried but my user was using Chrome not Firefox.  Either way it’s not ideal on a training session.  I’ve been using mostly FireFox as the browser so that I can use the endnote Web toolbar.

Has anyone experienced similar problems?  Not sure if it is the way we are setup here and it’s difficult to get hold of people with clean accounts.

Thanks   Sam