I dont think so they accept the AOR with webform, because IMM5710e needs to be corrected, and some options also needs to be changed when you initiate process.you can submit your AOR thought a webform, the AOR is just an email with your PR application file number. After this submitting you can call IRCC and ask if the received the AOR for your WP application
https://secure.cic.gc.ca/enquiries-renseignements/canada-case-cas-eng.aspx