How do I change the image in my sites mobile navigation?

Hi guys,

I am struggling to find where I can change the logo for my site under the navigation bar. The site logo has successfully uploaded the ‘Lower Macleay Preschool’ logo to all pages, but the drop-down mobile navigation menu (3 lines) still has this old ‘KinderGarten’ logo that also has a faulty link (it doesn’t direct back home).

Can anyone please help me with this? I’ve attached screenshots for reference.

My site link is below:

Thanks so much!