Hello

Thank you for your query. Could you kindly share a screenshot or a video highlighting the issue and the area where you are facing the problem? That will be helpful for me to understand better.

desktop view https://oxfordsystems.eu/Screenshotdesktop.png

mobile view https://oxfordsystems.eu/Screenshotmobile.jpg

Thank you for the screenshots.

Please add the following css rule in custom css section.

@media (max-width: 767px) {
  .sppb-addon-tab .sppb-nav {
    display: block !important;
  }
}

Hope this helps you.