In either case, I wouldn’t think it’s wise for any 90 Day Fiancé: The Other Way fan to donate to the cause unless there’s some evidence that Jihoon Lee is aware or supports the fundraiser.
Another possibility is this is just a fan looking to help Jihoon Lee independently and is not affiliated with any people he’s made contact with in the past.
Scam fundraisers are an unfortunate part of the internet, and it wouldn’t be too surprising to hear someone could be using the former couple’s well-publicized drama to potentially cash in on a payday.