(English is not my 1st language)
I honestly discourage to do business with them. Unless you want to lose a lot of your precious time.
I bought the classified plugin full of hope. I read all of the documentation, used a fresh install of wordpress with no others plugins in it. Their damn plugin couldn't work as advertised! I tried and tried and tried, lost so much time, wrote to their support by forum, and by mail, some of them even disappeared without solving anything. They had full access to my website.
One of their support member even tried very hard to make that bad plugin work, and couldn't do it. Their own plugin...
I obviously asked them a refund, they said no. I told them to make their plugin work then. They couldn't do it. I have still haven't got a refund by now. And of course no protection from paypal, so I'm probably just scr*wed...
Others true professionals like for example EDD, refund you if your not happy with their plugins. And actually resolve most of your issues. So I can't understand why wpmudev sell plugins that don't even work. That's just stealing people! I can't believe that level of unprofessionalism exist.