Who should I contact when I need technical support for GVIDO product? GVIDO Customer Support April 17, 2019 01:13 Updated Please reference our Product Support FAQ. If this does not solve your issue, please contact our GVIDO Customer Support. Related articles Where can I locate the serial number? What is the Support Center's operating hours? How to turn on/ shut down my GVIDO Device It doesn't operate properly. What should I do? Can I turn the page using another manufacturer's foot switch?