I do not like instructions sounds very odd. I do not like rules, sounds more natural.
Your answer is correct, report it. It was marked wrong because you did not take into account "keine", but to me, there is no real need to.
In English there's a difference between "I do not like instructions" and "I like no instructions" (although the second is grammatically questionable). How would you express in German that you like not having instructions given (not that you necessarily dislike instructions, but you like the situation in which you have the freedom of no instructions)?