anyone here use yo kart? Their shopping platform looks interesting, however, when I ask questions I get vague responses as if they do not understand their own system, in some cases, it may take 2-3 days for them to respond, in other cases, they simply have not responded at all.... They appear to be legit, if they do have customer support, it seems a little shaky... If you use their platform, then I would like to ask couple questions. Thanks