In some cases the finger prints are not clear, which could be due to many reasons. The officer has the discretion t ask for a new finder prints if required.
See
https://www.canada.ca/en/immigratio...t/biometrics/administration/fingerprints.html
If you give fingerprints one more time, then the new ones can be substituted for the current ones you gave for the PR application. And if the reason for poor quality, that will be addressed.
You don't have to, as it will be available in the system anyway. But you can send a webform. No harm.
Most likely yes, if not, then you will get a decision soon.