License usage on a machine that has no Bentley software installed

I have a question regarding to one of our customers that have uses Bentley software on a Citrix solution.

The problem is that the Bentley software only is installed only at the Citrix client, but when they received their last bill, they could see that a computer name with absolutely no Bentley software has occured on the list.

We can not see how that could happen...

The data is confidential, so I hope that I can explain the problem further and get help from a Bentley professional.

Best regards

Rune H. Christensen