Re:cite's always been totally accurate for me. There've been times when I've had to look up proper Style Guides (eg
this one for MLA) because I'm doing something really specific like citing two texts by the same author, or a series of letters someone wrote, etc. But I've never been pulled up for incorrect formatting and I use re:cite every time.
Perhaps your adviser was talking about this function on the Discovery site:

where if you're looking at an article or other resource and click 'Cite' on the side, it brings up a list of references for all the different styles. This one, I usually have problems with

It's only ever something small, like incorrect capitalisation, or a space/punctuation mark where it doesn't belong, but for MLA, APA, Harvard and Chicago which are the only one's I've ever used, I have to double check that info every time because one in every three or so will have a mistake.
In the unlikely event you do get pulled up for 'incorrect' referencing, I'd just contact your tutor or subject coordinator and be like 'Yo, re:cite told me otherwise.'