Hi

Thanks for contacting us. Could you please give me your site URL so that I can check?

-Regards.

https://demo.joomshaper.com/?template=ensure

That is the template. I really don't think you need access to answer my tech question?

For your logo height go to System--> Your default template --> Template options --> https://prnt.sc/2TFebq32jL0V

You can change the logo height from here.

For center the logo you can not do it if the menu is there. Sorry this template design is like this. If you want the logo on centre then you need customization. And sorry we do not provide customization support. You have to done it yourself. Hope you understand.

You can try the custom header and then try to do it. This blog may help you.

https://www.joomshaper.com/blog/how-to-create-a-custom-header-using-helix-ultimate

-Regards.