Guys,
I recieved the following email in response to my query about the problem uploading the IMM5710E form;
Thank you for contacting Immigration, Refugees and Citizenship Canada (IRCC).
Problem with uploading the IMM5710 form
We are currently looking into the issue described in your email. We will communicate with you as soon as we have more information.
We apologize for any inconvenience that this may have caused. Rest assured that we are working on improving our online services for future releases.
Sincerely,
Immigration, Refugees and Citizenship Canada
www.cic.gc.ca
I am not sure if this a generic reply or not? What did you guys get?