You’ll just have to wait.
I’ve only had the MSFS 2020 Premium Deluxe and Deluxe pack come through into 2024, no FF, LL, or 3rd party aircraft.
It’s a fairly safe assumption that they have serious problems with the conversion process, and also the distribution, going by the conflicting experiences people have posted since release concerning these a/c.
How long it’s going to take them to fix it is anybody’s guess.
Even so-called native 2024 versions of 2020 premium deluxe a/c are badly broken Zlin Aviation - Shock Ultra - no speed indicator - #21 by SmotheryVase665