The response is a template email, and doesn't include that much useful info.
Ordering another notes is gamble. There is a chance that they will give you the new one soon (one month deadline) or they will again postpone it for another 3 months. It is a gamble. In case you want to take the rist, this time order CBSA notes, as you are probably uder SS.
Yes, by RR, I meant review required. So, in checking the eligibility, there are times that the case analysit can't verify your document or your document is not complete enough, etc. In those cases, the case analyst sends your file for review by seniors. This is where things get messy. Because, it goes out of the usual route of the process. And God knows how long it takes for the sentiors to check it again. You don't want to get yourself in that trouble.
If you had gotten your notes, you could easily see if your eligibility is passed or not. There is also another way. Try to call them and specifically ask them about your eligibility.
Note that the meaning of eligibility is different in GCMS notes from the CSE. In GCMS note, eligibility means the steps where they ckeck your documnts such as job experience, language, University credentials, etc and if you have all the conditions they pass you. This is also the same as what people use on these forums. However, when you raise a CSE to ask about the progress of your application, they refrain to tell you that you passed eligibility. In fact, they consider criminality and security as part of eligibility sicne they believe that if a person does not pass the criminlaity, that person is not eligible to get PR.