The reason to invalidate the review was an edit made to the answer which unfortunately did not fix the nature of the answer, just like the following edit.
So my flag is marked “helpful” now…
…but the low-quality answer (assuming the community consensus from the upvotes to my comment and no disagreeing reply) is remaining there and I cannot flag it again.
I could use the “not an answer” flag but I find this inappropriate since the post tries to answer the question.
What should I do now?