I just got my call back from the nice representative at Mindjet. Apparently the email invitations and the account creation system that they trigger do not work with the Firefox browser.
So if you receive the email, you have to open the ‘Get Started’ Button
from the hyperlink behind the button.
To do that, right click on the button in your email, select copy, then open up Microsoft Word, hit paste.
Then select the button, right click and hit edit hyperlink.
Now you can select and copy the actual hyperlink and paste it into that browser that people used to use back in the 90’s called Internet Explorer.
Just kidding, I understand Mindjet is a Microsoft partner and all and I (unlike many others) love Microsoft, I’m jut not to crazy about IE(x).