Hi rodrigozamorano,
This is not possible. it needs code customization. We have used get_the_excerpt() function. Go to theme folder -> library -> structure -> header-extension.php on line no 379 you will see this code
$excerpt = get_the_excerpt(); remove it and add this below code
$excerpt = get_the_content();
Now one thing. If you make a direct changes in the code then while updating to new version each and every time you need to add the same thing again and again.
Other way is making a child theme. First unhook the function and create a child theme and customize the code. Don’t do anything in parent theme. So that while updating to new version your customized code will not be lost.
Thank you!
.
.