Thank you!Typically ADRs need to be submitted through your GCKey account. You should be able to upload in the submitted documents section. However, I recently sent a proof of my re-medical through Webform and they acknowledged in 2 days.
Actually, there is no option in GCKey to upload ADR so I called IRCC and they told me to submit it through webform. Now I am not sure how can I check whether its delivered for review.