You were correctly refused unfortunately. You were obligated to notify IRCC once you got married in May and it was mandatory that you add your wife to your application. You should not have used your PR visa to land since it was issued to you when you were single. You were required to add your wife to your application and wait for IRCC to issue a new COPR to you. Unfortunately there is no point appealing. The appeal will be refused as well.I got visa April 28 2016
I got married May 25 2016
She got pregnant in June 2016
I landed on August 03 2016
She got birth after I moved to Canada in February 2017
How did you get your PR status? Any chance it was through family sponsorship (i.e. you were a dependent in your parents' application)? If so, there is a pilot program starting that may help you. If you immigrated through an economic immigration program (e.g. FSW) - then you are out of luck. You'll never be able to sponsor your wife.