Couldn't download DS games like before

Hi, I've been busy moving house and only just returned to romulation. Tried to download a few games for my kids and saw that you are now on ilivid. I can't seem to download any game on my computers (e.g. Mac and HP), is there anything I've missed out on, please?In the past a WinRAR file would come up and I would just save it - but now my computer says iLivid cannot be loaded etc.Please help.Thanks.