Change logo size

Hello,
please try and the following custom css code to
Dashboard => Appearance => Customize => Theme Options => Advanced Options =>Custom Css
Add the width and height according to your wish

img.custom-logo {
    width: 100px;
    height: 133px;
}

If the code solves your issue, please mark the post as resolved on your left hand sidebar so that other members can find users like yourself, that are seeking help.

best regards

I had already tried something similar to this. The problem that results however is an image that is not scaled properly. The customizer crops the image to the smaller size and then when it is enlarged via the css, it becomes pixelated.

Hello,
Please update the theme, the version 1.5 of the theme uses hard cropping of the logo, while the new version of the theme uses WordPress’s default custom-logo cropping.

OR if you want to stay on the old version find and add_theme_support( 'custom-logo', array( .... on the themes function.php, create a child theme then on the child themes function.php then paste the code form the parent theme, adjust the width parameter on the array accordingly.

I would recommend you to update the theme instead of going for the second option.
best regards.