You can edit the logo.png from the folder app\img-assets. Also, if you open each page, you will see the tag inside <header>:

 <div class="logo-container">
   <div class="site-logo">
    <a href="index.html" class="site-logo-anch">
     <span class="logo-img-sticky site-logo-img-sticky">
      <svg xmlns="http://www.w3.org/2000/svg" width="34" height="30" viewBox="0 0 34 30">
       <path id="Forma_1" data-name="Forma 1" class="cls-1" d="M41.962,13c-1.522-2.569-4.5-4.042-8.159-4.042A11.446,11.446,0,0,0,26.915,11.6a11.626,11.626,0,0,0-8.564-3.589,9.588,9.588,0,0,0-7.99,4.671A7.51,7.51,0,0,0,9.2,18.745c0.949,3.962,4.923,6.906,6.593,7.992v9.805a1.439,1.439,0,0,0,1.428,1.449H36.1a1.438,1.438,0,0,0,1.428-1.449V25.992a8.978,8.978,0,0,0,4.037-3.735C43.349,18.862,43.489,15.573,41.962,13Zm-2.914,7.9c-2.366,4.513-12.461,4.7-16.152,4.385a1.449,1.449,0,0,0-.237,2.887c0.158,0.014,1.235.1,2.812,0.1a33.885,33.885,0,0,0,9.206-1.16V35.1H18.652V25.923a1.453,1.453,0,0,0-.735-1.266c-0.05-.028-5.057-2.9-5.94-6.6a4.633,4.633,0,0,1,.759-3.771A6.808,6.808,0,0,1,18.425,10.9a8.88,8.88,0,0,1,6.354,2.607,24.4,24.4,0,0,0-3.222,4.1,1.46,1.46,0,0,0,.48,1.988A1.417,1.417,0,0,0,24,19.113c0.044-.073,4.428-7.261,9.806-7.261,2.637,0,4.718.962,5.712,2.637S40.338,18.434,39.048,20.9Z" transform="translate(-9 -8)"/>
      </svg>
     </span>
    <img class="logo-img site-logo-img" src="img-assets/logo.png" alt="logo" title="phaeton" width="196" height="36">
   </a>
  </div>
</div>

Here you can upload a different image for the sticky logo. In this template, the sticky logo is an SVG format.