most likely your app has passed 12 months and need to complate all these required formsi got a mail from cic requsting for this info
Ø Schedule A: A separate and newly completed Schedule A Background Declaration form (IMM 5669) bearing an original signature
Ø Additional Family Info IMM5406: A separate and newly completed Additional Family Information form (IMM5406) bearing original signatures
Ø Police Certificate: From each country/state where the residence period has been six months or longer since the age of 18, provide an original police clearance certificate
5669 once u validate it you then physically have to sign it with pen. a long with your police report and additional document. pray you don't need to complete medical