Rosemaris

Hello? I have big problem. I bought many times to try and wear for me on Market SL of website. I thought I can open and wear in game as soon as I login after buying items? But I can't. When I click on the box in my object folder, It's said something msges. But I cant understand it? Maybe it means I need something first to wear my items? Please help me? What can I do to wear my items in game? Why I can't open and wear them after buying times?