Hello,
Strange, because in code we can see the next – https://prnt.sc/M_9y0glNyC3R
Try to re-upload the logo image into the media library and then re-select it in settings.
Clear cache and check the result.
Provide temporary wp-admin access, so we can take a closer look.
Create an account via Dashboard (Users > Add new) with administrator role http://prntscr.com/s3rc9m > provide us with username and password via the Private Content area http://prntscr.com/s5mao7 You can use any email for it.
Regards