I myself have been using these themes for a couple of years. Every time I ask for help, they respond within a few hours and help until the problem is resolved even my support period is expired. I highly appreciated their customer support service and There is no loss in purchasing this theme.
I need to say that there are no any bugs found during the two years of period I used this theme. They release updates regularly. I had to get customer support only for changing domain and advanced tasks of installation process.
Best wishes for development for the team!!!