FYI (and I know this information is a little late to you now).. but in Ontario, expired plate stickers are valid indefinitely. You are not required at this time to renew them, due to COVID 19. That being said, you still can (online as you did), its just not required. They wouldnt have been able to 'kick you' with the expired plate sticker... They would have found other reasons.. LOLPut my license plate validation sticker on.
It arrived in the mail today, noticed last Friday during my check over prior to the weekend. I had been riding for a couple of months without it and not noticed!
Renewed it online and got a piece of paper granting me a two week extension to show to the police if pulled over, but decided not to ride it until I got the sticker.
I thought riding on the Victoria Day Weekend* (Two Four Weekend) with an expired sticker was like wearing a "kick me" sign on Muscle Beach.
* Victoria Day is a Canadian national holiday, traditionally complete with fireworks and pre-COVID drunken gatherings and camping.