eTa (electronic travel authorization) for Canada denied or approved? [closed]

I hope somebody who really knows about Canadian eTa permit can answer my question.

I was a university student in Canada for one year (2015 - 2016) and I had a valid student permit (which expired on the 30th of December 2016). I really want to go to Canada to visit my friends and I have never been denied a Canadian visa nor did I get denied my student permit/visa the first time that I applied for it.

I applied for U.S visa when I was in Vancouver and they denied it (as usual, since I am a Mexican citizen). I never had any trouble with Canadian authorities, but I got my U.S visa denied in Canada.

I'd like to travel to Canada to visit my friends and since my student visa/permit expired, I have to apply for a eTa as Mexico is part of the visa-exempt countries. There's a question on the eTa which says the following: "Have you ever been refused a visa or permit, denied entry or ordered to leave Canada or any other country?"

I know that I have to answer "Yes" and explain why. There's also another question which asks if you have ever had any kind of Canadian permit/visa which I've had (my Canadian study permit/visa).

Does it have a big impact if you've been denied a U.S visa? and would it be positive if I've had a Canadian study permit/visa before?

*I don't have any criminal record or overstayed in Canada. I actually left the country on September the 12th 2016 and my student visa expired on December the 31st 2016.

I am scared that I might get my eTa denied because of the declined U.S visa, which was total misunderstanding. When I arrived to the U.S consulate in Vancouver, the Chinese-American visa officer (who was really rude and impolite) asked me where did I want to go and I said: "to Seattle for a few days" and then he asked if I had any family in the U.S and I said: "No" cause I don't have any family in the U.S. He then told me that my application had been refused and when I asked about the reason he told me that I had lied. It's really unfair that because of him, I don't know what to explain on the eTa application and I know that the U.S and Canada share records. I feel really frustrated that it may affect my application.

Could somebody please help me out and guide me a little?

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What if my eTA is not approved?

If you apply for an eTA at an airport, and your eTA is not approved in time for you to check-in for your flight, you will need to reschedule your flight.

How do I know if my Canadian eTA is approved?

Yes, your clients can confirm their status by using the eTA check status tool. The Government of Canada will also send email updates to the email address provided on the eTA application form.

Why was my eTA canceled?

An eTA can be cancelled in cases where information comes to light that you have become inadmissible to Canada. At that point, an immigration officer would cancel your eTA and let you know by email. If your application was cancelled, you should not travel to Canada.

How long does it take for Canada eTA to be approved?

The Canadian immigration service recommends that you apply for your eTA as soon as you decide to travel to Canada. Most eTA applications are approved within three days. In case of an urgent application, the average time for an eTA application can be as short as 18 minutes.

How My Canada ETA was Revoked

Sources: Stack Exchange - This article follows the attribution requirements of Stack Exchange and is licensed under CC BY-SA 3.0.

Images: Andre Furtado, Erik Mclean, Bobby Mc Gee Lee, Alexie Valix