Currently, we do not offer commercial technical support for free GPL-licensed copies of TightVNC. However, we do support our commercial licensees, and the license price already includes technical support.
Please contact us if you are interested in our technical support services, or have any questions or suggestions:
If you already have a commercial license with a valid maintenance term, please send us support requests to the following e-mail address:
Also, there is a number of ways to obtain free technical support (without any warranty). See more information here.