Santos-Dumont wrote on Jul 24^th, 2021 at 10:42pm:

I purchased the 777 from Marketplace and no ACE in the package. What's the big deal don't having the ACE with this king of purchase? And, if I by the -300 in the Captainsim site, will I have the ACE for both?

Marketplace has its policy on the product content.
The -300 or the -F ACE will work with its own airframe only. https://www.captainsim.org/forum/csf.pl?num=1626711496