Right now, the peer assessment is still going on. If you check on the right side of q2a, you should see "Peer Assessment Deadline" where there are three circles where the times are running.
Technically you should be able to upload right after you have sent the feedback on the three pseudocodes you got ( at least I could ) but in case that doesn't happen, just wait for 23 nov and you can re-upload your revised program (deadline is 24th November).
Also, you won't have to upload a new pseudocode, that should remain as is.