Episode 8 has been flagged on FileFactory, probably due to episode title. Don't know whether to leave it alone and wait, or if there's anything you can do on your end.
The link for episode 8 on FileFactory is still returning the same error message, and I seem to get a similar error when attempting to download using the RapidGator link.
Links on Filefactory for part 2 of episode 4, part 2 of episode 6, part 1 of episode 7, part 1 of episode 8, part 1 of episode 9, parts 1 and 2 for episode 10, episode 11, and episode 13 are all down.