It sounds like the mistake you made was to declare your address to be the same as your husbands while you both lived in your homeland when it really was not your address as you were only staying there on the weekends. The problem with this is that immigration now believes that you were common law partners at the time he immigrated which would have meant that he was obliged to include you in his application. The fact that he did not is seen as misrepresentation on his part and if immigration believes this to be true, they can revoke his PR or bar him from ever sponsoring you for PR.
Hi Leon,
I am sponsoring my spouse to come to Canada. In my address history, it shows that I stayed at his address temporarily for 2 months. What happened was that I had to move out of my old place, so while I was waiting for my new accommodation, I stayed with him temporarily. This was 3 years ago. I am worried that this may be seen as common law relationship but we were not, and as such, he was not reflected in my own application. What do you advise? Should I give a letter of explanation with our application?