That did the trick!

BIG thanks.

It does look a little funny but then again his username is very long. Most members ones are not.

Thank you again. 

I'm still new to Wordpress and wpforo.

I'll be asking lots of novice questions soon and will be leaving you guys a 5 star review.

Warm regards

Add this CSS. Don't forget do all steps of deleting caches mentioned by Martin above:

#wpforo #wpforo-wrap .wpfl-2 .wpforo-post .wpf-left .author-name a{
     word-spacing: normal!important;
     word-break: break-all!important;
}

If the css doesn't help, please leave a direct link to that topic.

BIG thanks for the super fast reply!

That code has greatly improved things. The @at yourservices part of his name now stays nicely in the menu, however his main username part (in orange) still floods into the discussion part. See below

Any suggestions on how to get the whole part inside that column?

Put this CSS code in Dashboard > Forums > Settings > Styles  Custom CSS Code textarea. Save it, delete all caches, then navigate to forum front-end and pres Ctr+F5 to reset browser cache.

#wpforo #wpforo-wrap .wpf-author-nicename {
     word-spacing: normal!important;
     word-break: break-all!important;
}

If a user on our forum has a long name, its spills into the forum/discussion area. If that makes sense.

See the picture below

Any ideas how to fix this?