The schools should be open by now, would suggest going there personally and getting their report cards.Wife and kids landed in Toronto as Permanent Residents on 15 June 2018- we applied for CCB later in that week, and sent all the requisite copies.
Earlier this month, we got the GST/HST and Ontario Trillium amounts credited to our account. However, for the CCB my wife received a CRA notice that our kids don't meet the residency requirements. Unsure how we can prove that kids were with us as the school is closed too, and we couldn't gain admission by the end of June.