Sometimes the json is correct (a journal with doi, etc), and other times (often), Citoid thinks this is a website. I find this confusing, since it is not consistent.
Topic on Talk:Citoid
More information. Once citoid goes bad, it stays bad for a while, and then suddenly works again. I have tried coming in from other IP address ranges and with other jstor IDs just to make sure that I was not personally being blocked. Thoughts: jstor some how blocks you, but you still get title with “ - on JSTOR” appended. There are multiple and different citoid severs running, but then I would think it would be more random and not last for a time period.