I understand their is a difference in jar size, amount with air ratio. If their is a difference in original recipe than what you did perhaps this is a factor but I cannot recall this aspect 100% so I do not say as knowledge and more of what I think I recall.
As long as it smells more like cheese than the bottom of a whisky bottle it should be good. Making sure the measures are accurate is better than just guessing amounts if that was also a factor.
Keep refrigerated.
Editing in:
Perhaps add some more sugar, I suspect fermentation started due to the curds forming again.
Hope if that helps any.
For natural farming information check out
http://www.cgnfindia.com/
(Drakes videos on natural farming, will take a week to watch but I recommend highly.)