CIC GC account status changed from application approved to in progress

hello there, I just joined the group…I am in a strange situation, I got an email from NDVO that my application is approved, I also got same changed in my cic account, got for four different numbers for each applicant, with a expiry date of june 23rd, same as my medical last year…I was waiting for passports since then…today I noticed in my gc account that my status of application is back to in progress??? any help on this please