I recently had my first paper to review. Since it was the first one, I took great care to be as constructive as possible and to formulate correct and accurate questions / suggestions. At that time, I recommended two major changes for the paper and a couple of minor ones (figures, typos, ...).
I just received the revised version of the paper, with the response to reviewer. One of the major changes I recommended was not fully taken into account by the authors. They did provide a very short answer, but it did not convince me. I read the new version of the paper carefully, to see if the content was changed to fit my suggestion, but it was not.
I am wondering what I should do now? Should I resend the same suggestion, pointing out it was ignored by the authors? Or should I let it go and tell the editor all the other changes were done according to my review? How should I tell the author they did not take my suggestion into account without being rude?