Oh, now I remember very clearly what they asked for, and I did it correctly!
First ID can be passport or PR card
Second ID can be Health card, or driver's license, etc
That might be a bit optimistic. They are just releasing AOR for those submitted in the first weeks of August. I submitted mine on August 14 and I hope I will receive the AOR next week!
This one is very helpful: https://www.canadavisa.com/canada-immigration-discussion-board/threads/notes-from-discover-canada-preparation-for-the-citizenship-test.734507/