Hi, Frederico.

I appreciate you for joining this thread and for sharing the steps you’ve recently done. 

I’m not quite sure about what LilyC is referring about creating another profile. This could mean creating a new QuickBooks profile or a new email profile.  

Though I was able to gather reports from other users who were able to fix the issue. They figured out that it was actually a setting in Gmail preventing the email from sending. In order to send emails you will need to grant "Access for less secure apps”. In your Gmail, go to Account > Security > Account Permissions. 

Hope this helps. Stay in touch if you have other questions about QuickBooks.