Did you get any update on GC key when PR card renewal was approved and mailed out?Thanks a lot!
Today (April 13th), the Return reason 'Incomplete application' disappeared for me and I was able to link the application to my gckey account using my UCI number.
I submitted the application on Feb 25th, so seems like my timeline is a week behind yours! Hoping the application is approved by next week and they mail out the card.