When it went bad at the end, when people were getting their gift cards after months of waiting, they were getting drained a week later. There were all sorts of rumors that the website was a ponzi scheme where they would take peoples money and invest it for 2 months before they finally (sometimes) sent people their gift cards. Some people ended up losing hundreds/thousands of dollars because they kept believing they would eventually get their gift cards, and then by the time they filed a chargeback it was past the deadline. I have linked to the original disboards thread that was dedicated to that specific website below; start with comment #92 where things started to go bad.
Personally, I would never order from those type of sites. I have no interest in having to spend hundreds of hours on the phone and keeping track hoping to actually get my gift cards. Also, back then people actually believed that all they had to do was transfer the balance to another gift card and they were safe which we now know is not true. Like everything in the world, if someone is selling you something at a price way lower than anyone else is charging, you have to be very skeptical if it is really on the up and up. No one else ever sells Disney gift cards at a 16% discount, and those gift cards were coming from Sam's Club which never sells them at that discount. But they will have no problem finding people to buy from them - there are too many people that see a big discount and just can't resist jumping on it no matter how risky it is. It is the same people who will buy the $1700 Canada Goose jacket on ebay for $400 and think they are getiing a genuine jacket.
https://www.disboards.com/threads/gift-card-deal-website-for-disney-gift-cards.3870723/page-5