Im Brazilian and have an eTA. I was in US in February this year and I didnt know I was allowed to enter Canada by terrestrial border. When going through land (in Niagara Falls), I was given a ALLOWED TO LEAVE CANADA letter. Now, two months later, I need to travel to Canada again to a work conference (this time Im going by plane from Brazil). My questions are, can they deny my entry because of this ALLOWED TO LEAVE CANADA letter? Any precautions I should have? Is my eTA still valid? Many thanks
