In IRCC we updated with the reason, my passport copy and us denial scanned copy. Not the application. let me know if I need to put the application too.
You need to correct this error immediately and fire your agent. It's pretty much guaranteed your application is going to be refused and you are also risking a 5 year ban for misrepresentation. If you end up being refused and/or banned - there will be nothing to appeal because you will have been correctly refused/banned.
Again, correct this error immediately (even if you have to withdraw your application).
Long story short, Agent forgot to mention us visa denial, I told lets update they said better not too, and in case of refusal they will file a appeal. What can I even do now?
I got visa refusal second time for a same reason that my agent not disclosed visa denial entry to Canada.
If i re-apply visa for third time what are the chances?
PS: First time refusal reason is missing academic records, mark sheets.