IT doesn't explain in detail how you link the OWP but only your PR App. Try this... I managed to link mine through this process. I've heard of people having to wait 4 days before they were able to link it, good luck
Link an existing application to this account -
https://onlineservices-servicesenligne.cic.gc.ca/mycic/registerApp
What program did you apply for?
Category - Temporary Residence
Sub Cat - Work permit and extension
Application Details
UCI & Family Name (The
applicants UCI & Family Name, not the Sponsor)
Applicant's personal information
Place of Birth (Self explanatory)
Details of intended work in Canada
What type of work permit are you applying for? - Open (initial application or extension)
Information about the applicants work in Canada
Current country of residence - Canada
Current marital status -
Which situation applies to the applicant - Applied for permanent residence as a spouse or common-law partner in Canada