Bought a 2019 CPO, homelink button is on screen, but I never got it working. Called Tech, came out, found out the whole module is missing and wires just left hanging down. We conjected previous owner kept it for themselves... no clue.
The tech has never seen/heard this issue before and don't know if it'll be covered by Tesla.
I'm hopeful but I can imagine them saying: the homelink feature is now an add-on, so you'll have to buy it again. :(