Regarding immigration to Canada, deal with the issue of visa extension.

If you really can't log in, you can write to the embassy to explain. But you will face the problem of overdue physical examination (the physical examination is valid for one year). So the embassy will take back your visa and issue it to you after your re-examination. This is a big risk.

As far as the current physical examination is concerned, one physical examination is unqualified and requires a second physical examination, and the number of examination items is increasing. In addition, other visa policy issues are not included, and there are other force majeure factors, such as war/SARS and so on.

So as the friend above said, log in within six months and come back immediately after completing the formalities. At present, the maple leaf card can come down in 20 days at the earliest and 40 days at the latest. If you can't wait 20 days, you can leave your Canadian friend's address and go back to China first. He will send you the maple leaf card later, so that you can log in at any time in the future.