This will explain what GCMS Notes are : GCMS Notes (Detailed 3)
The Best and Detailed Guide for GCMS Notes is this one : HowtoorderGCMSnotes? (ATIP). It will cost $5 and will take around a month or two to arrive via email.
Welcome salihab
You can order the GCMS notes it will help to find where you are in the process
https://www.canadavisa.com/canada-immigration-discussion-board/threads/how-to-order-gcms-notes-step-by-step-process.513893/
Good luck
You can find out office by either ordering gcms notes or by calling cic.
You can search the forum on howtoordergcms notes. Gcms notes arrive electronically and they take about 30-35 days to get to you. They wont cause any delay