Dear jvstratum,
I have maked the update for the 10.0.1, and after I have send same e-mails.
the situation remains the same. I created a test list with 6 emails. these were all received, and opened, but only one indicates that it was opened. The email sent has a pdf attached and information about our website, which you just need to click on to go directly to our website. the remaining 5 emails only give information if you click on the link, and then the information appears that the email was opened and the link was clicked