Are you sure that you have selected the correct image? Please see what you have selected in private.
The website make 80×80 automaticly. I can’t selected a other size.
You are currently using a very old version of Enfold. Please update Enfold to the latest version 5.6.6 ( https://kriesi.at/documentation/enfold/theme-update/ ). After updating Enfold, you should be able to select the Full Size option ( https://i.imgur.com/ydn3e8A.png ) when selecting your logo.
If updating the theme doesn’t fix the issue, please create temporary admin logins and share them with us in the private content field.