Mega Menu: 1st column is not displayed on ipdaPro 12,9".

Hello

Thank you for your query.

Please add the following css rule in custom css section:

@media (max-width:1440px) {
  .sp-dropdown.sp-dropdown-mega {
      left: -100px !important;
      margin: 0px !important;
      width: max-content !important;
  }
}

Kindly do let me know if that works.