Hey Sarha21, yes absolutely no problem - i've done it a couple of times now. The rule is that you can't enter Canada in a commercial vehicle without the PR card. So in theory if you had a private jet, then you would be fine to enter Canada. It's honestly such nonsense. But you can find it on the official website if you need more clarification but basically it is this:
Enter Canada by commercial vehicle - you need PR card
Enter Canada by private vehicle - you can use your eCOPR. Just make sure it's signed if you printed it! and yes I had just printed it