The question now is.. Did they have a BitLicense?
Of course not because they are not based in NY.
Florida does require a Money Transmitter license for any Bitcoin exchange. A such license is very expensive(over 500K) and I don't think it's worth it based on the BTC tradings that a company can get these days.
Don't be fooled by the bots you see in actions on any exchanger platform.I am talking about real transactions. It's hard to maintain a licensed company. You need staff (employees) and the salaries are not low in USA.
Example: you need a compliance officer.
A salary for a such position is around of 3000-4000 usd/month
without taxes which are not small at all.
You need a collaboration with lawyer. This should be around of 1000-3000 per month(depends on lawyer). you need yearly audit. the cost is around of 10,000 USD or more(depends on how many transactions you have), advertising, common bills (electricity, phones, internet, rent), taxes.
For a small company, a such license is useless.The costs per month can easily reach at 20,000 usd or more. So, first you need to make 20,000 usd and then to think about a net profit for "yourself"(owner).
Very hard to make these money.
Do not look at Coinbase and others like them. They were/are financed by shareholders with millions of USD; otherwise they would be bankrupted.
A compliance officer only making $36k-$48k a year? Maybe if he's a teenager. lol My companies controller made $120k annually and the compliance officer was in the 90s. Both are VP level positions.