@ymit The reason you didn’t receive a response was that your application was incomplete. You did not provide an ACME account ID. Unfortunately we don’t have the resources to follow-up on individual applications that do not contain all of the information required to process them.
As @jared.m points out (Thanks!) it sounds like you may not require a rate limit adjustment at all. Can you elaborate on the specific rate limit(s) you are hitting or are worried about hitting?