I dont see why the PCC from the SSP office won't work. According to this link, the local district police station PCC should work.Yes, In gckey it show "We are processing your background check".I tried to go with another smaller city but that's not allowed, PCC must be applied from PSK under whose jurisdiction your area comes. So, I am trying to get PCC done from SSP office of my district. I will submit this PCC and will request IRCC to extend timeframe given if district PCC is not acceptable with PSK appointment proof. I hope they will grant some more time.
https://www.canada.ca/en/immigration-refugees-citizenship/services/application/medical-police/police-certificates/how/india.html
please enlighten me if I am wrong or missing something.
Thanks