Hey buddy! Thank you for let me know. I could not check by ur link that you sent me because I did not apply for an eTA. I just checked in the government website and it says that application of PGWP after May 1st, 2017 (my PGWP was issued May 10, so it's ok) the eTA is already linked to my passport.
Thank you so much for your answer. Now, I'm relief.