In the circumstances where a return is not accepted by NETFILE/EFILE, for instance, a final return for deceased, a paper return has to be filed.
Before you go to "File your Returns" page(second picture) to download and print the return, you have to do the following:
You also need to sign the return and attach the supporting documents like T-slips. You can find the mailing address that serves your area by clicking on this: CRA ADDRESS
You also need to sign the return and attach the supporting documents like T-slips. You can find the mailing address that serves your area by clicking on this: CRA ADDRESS