Hello & Welcome to Just Answer,
Sorry I didn't see your question earlier and to hear of any issue you are having with your device.
To help you with this issue, may I ask:
1) Have you EVER been able to use this device and SUCCESSFULLY find Ontario?
2) Do you know how to get to the Map Information screen - to enable and disable maps?
If you are not sure how check the maps installed, please take a look at the following video - at about the 1:30 mark - that shows how to get to the Map Information screen on a similar unit.
Once on that screen, CHECK that there IS a map that covers that area (for Ontario) AND that it is ENABLED.
Please let me know what you find or if you have any more questions.
If this has helped answer your question(s), please take a moment to rate MY service level (5-star is my goal) so that I get credit for my time helping you with this question.
You should see some "stars" (and SUBMIT button) to do that, but please let me know if you do NOT see them (you may have to REFRESH your screen) or can not use them.
Thanks, ***** *****