Paid & Free Version same PC

There seems to be a problem with the PAID and FREE versions cohabitating on the same PC. Why is the license not tied to the login?

Seems when we have a paid version try to connect to our business machines, if that same PC has used the free version before then TeamViewer refuses to connect.

This is the error message: "TeamViewer Free does not allow connections to customized Host module clients with your own company logo. Please use the basic Host module or the full version. This session will be terminated after 5 minutes."