DLC opens fine here, so the error is on your side - you might want to ask on the JDownloader forum for help as they know better what causes the issue.
Also, reuploads will be done once the series is complete in two weeks.
heyy can you please update [210811][ナッツが主食] JKボクサー凛香と復讐の地下リング Ver1.1 [RJ325990], there is a newer version of the game, it gives the game an english translation, thank you