HI John!
This is such an open-ended question, as there are many reasons why someones account could have been suspended. First of all, has you friend attempted to contact WGT Customer Service??? Also I can tell you in advance that you personally message WGT CS, all they can tell you is that they are unable to share anyones account information and regardless of how frustrating this may seem, it is exactly as how it should be!!!
Most likely it's something that can be worked out, but that will most likely have to take place between the individual in question and WGT Customer Service. I can tell you from past experience, that they are a most understanding and fair bunch of folks, so you may want to advice your friend to approach them directly.
Also, if you and your club are fully in support of the person referred, you could have those in your club, message their support of him/her directly to WGT Customer Support in a polite, but persistent way to get them to reverse a suspension.
Just my observation, but WGT does play fair, so give this approach a try!
Phil aka., Coyote