Correct typo error in the article title that published Early Access of the journal I have a accepted  article that published under early Access. 

Today, I have got the proofs from the journal to approve some changes. I have found a typo error in the title "Commutation" instead of "Communication". I have already sign the copyright form that contains the paper title. 

What should i do?
Make your changes in the proofs, or at least tell the journal what changes to make. From what you describe, "Early Access" means the paper hasn't been published yet; the journal just put whatever was accepted onto their webpage. In that case the proofs are your chance to make changes - this is also the most convenient time for them.