Problem solved, I had the KA version from Marketplace, and it got detected when I installed MSFS2024, I later bought KA from Justflight because it was not possible to copy the Marketplace version to 2024.
Even though I deleted the Marketplace version in 2020, it did not work until I reinstalled 2024.
But after deleting the Marketplace version in 2020 and reinstall of 2024, it seems to work.