When you flag an answer as "not an answer" or "very low quality", the answer is pushed into the Low Quality review queue where other users can judge whether in their opinion your flag was justified. In this case, all three reviewers chose the "Looks OK" option, which resulted in your flag being "disputed". After that review, another user flagged the post as "not an answer" too. The post went into the review queue once more, this time with a split outcome, three reviewers chose "Looks OK", two voted to delete. This resulted in that flag also being disputed.
Since it really wasn't an answer, I deleted the post.
If a similar situation arises in the future, one option is to raise a custom moderator flag from the start — "This isn't an answer but the OP responding to a comment by posting their attempts, it should be converted to [a comment | an edit]" or something like that. If the moderator looking at it agrees with your assessment, it's just a matter of one or two clicks to convert the post to a comment or an edit, as appropriate. The other option is to do what you did, edit the question yourself and flag as "not an answer". If that works, it's less work for the moderators (which is always a good thing). If it doesn't, you can cast a custom flag on the post and explain the situation.