i pulled my rear seatbelt all the way out and it want retrack. any ideas to fix on 2012 Volkswagen CC

I was cleaning it after my son vomited all over it. If you can help please let me know.

Asked by for the 2012 Volkswagen CC
Check with dealer for warranty.
Ok. I just hit 40k.
If that dont work out post again and we may be able to help but need to check on warranty first.