First thank you very much for your reply, I do appreciate

To answer your questions, I applied for an extension of my student visa while i was in canada and they asked me to go back to my country to reapply but I didn't leave right away and I didn't notify immigration when i left, I didnt know that I had too. Now back to the present visa application, I did answer truthfully to all questions asked and i did disclose all the information about my past denied visa but still they gave me a visa and didn't ask for ARC. I'm just scared that i might be denied entry at the border. What do you suggest i should do?Thank you for your time