Hello Milena,
Thank you so much for your questions. You can customize the logo size from acmethemes/core.php file. Increase the height and width of logo size from the code there or replace that code with the below code:
add_theme_support( 'custom-logo', array(
'height' => 70,
'width' => 290,
'flex-height' => true,
'flex-width' => true
) );You will see the similar codes there, remove it and add the above one.
There is no any filed to add the Advertisement just below the menu, you can only add above the menu. If you want to add there, you need to customize theme.
Let us know about the results.
Regards
Acme Supports
