Concern over not declaring the former common law spouse when she applied for her PR I think. I think she called herself single on her PR because common law doesn't exist in the philipines even though in Canada she would have been considered common law, if I'm understanding her posts correctly
From other posts not at all clear what's going on, except likely some (new) PR app now.
So
@Wendy35 - anyone who doesn't know the full story, and your story is clearly a bit complicated (came as a student, pgwp for a bit, pgwp not extended because not an eligible insittution - then some attempts at some other way to remain, etc), can only sort-of infer what's going on, and probably/guess infer incorrectly at some point.
therefore: if you really need to figure it out, you may need to hire a lawyer.
So I don't really want to guess. I don't think they're trying to catch you in some misrepresentation from ~6 years ago, and your case isn't really a family sponsorship issue (I think). If the only mistake was on your entry ages ago (and to me the dates don't make sense), and he's no longer in the picture, don't see why they're asking for this declaration either.