Hi,
I am using the VirtueMart 3.0.8 with Vina Bonnie template and I want to display 4 products in a row on desktop (which works well) and 2 products in a row for mobile device.
I have seen related topics for but don't have a clear understanding of how to go about it.
A comprehensive step by step instruction of how to configure this will greatly be appreciated.
First problem is that you are using an out of date and insecure version of VirtueMart. Possibly with an old version of Joomla, too? http://forum.virtuemart.net/index.php?topic=118683.0
Your commercial template should handle mobile layouts using conditional css but is probably also well out of date.