[D] ICML Reviewer Acknowledgement

Hi, I'm a little confused about ICML discussion period

Does the period for reviewer acknowledging responses have already ended?

One of the four reviewers did not present any answer to a paper of mine. Do you know if the reviewer can still change their score before April 7th?

There is a reviewer comment that I will answer on Monday. Will the reviewer be able to update the score after seeing my answer?

Thanks!