Hey,

Every degree or course is completed only when you clear all the backlogs associated with that course. Once you  clear all the exams and backlogs you get the certificate for the completion of that specific course.

As you have cleared your backlogs in 2019 so that should be your completeing  or passing year and not 2017.

So, I will suggest you to talk to them once on their toll free number or mail to get assistance regarding your problem. They will help you with this.

Hope that helps.

Thank you