I tried it and it was working fine. You just need to navigate in the site and select the DLC section, if you have it as favorite or anything else it will be blocked for some reason. Also there are some content that are saved directly into someone's savedata, that is for the Tales of the World series, GTA, Monster Hunter and probably a few more, so aside from what I list in here, it will be nearly impossible to get all the missing files unless someone buy it, well, considering that's an option.