Hello,
Provide URL of page with problems and temporary wp-admin access.
About the logo, go to Theme Options > Header Builder > change width of the logo element
https://gyazo.com/cbe77b34ce047ffef1ec058a45c860c5 > https://prnt.sc/20xxc6o and https://gyazo.com/4c99b39b7c5dbc6281223f3d5b6e8e0c
Regards