Logo in menu

Hi, I cannot get the logo to be big in the menu. Can you help me please?

Yes please explain more what do you mean by that with sharing your webstie's url and possibly the login information so i can check thanks

I've added this CSS into wp-admin >> appearance >> customize >> additional CSS

.header .logo img {
	height:138px;
}

This is the maximum height you can get with your logo and the style of your logo for available space. 

Your logo is having very large Icon and very small text it would not adjust proptionally nice. 

I have edited your logo and made the icon smaller now its looking much better thanks this is the type of logo you should have