Trump's kids?
"Zuckerberg offered much less and hoped Trump would back him up."
I wouldn't be surprised if a certain amount was offered through backchannels to his family, and someway, somehow, Trump didn't have the influence over this case like was expected.
If you're looking to open a factory or build an apartment (or any other single digit million dollar thing that some government official can discretionarily double the cost of by being obstinate and forcing you to drag them through court) building one of the first things you do is internet stalk the key government officials figure out who their friends are and kick off a bunch of $200-2000 donations to whatever stuff the people around them are involved in (middle school drama club, local animal shelter, etc, etc).
With hundreds of millions at stake I would be very surprised if they weren't doing this and more.