Not everything changed. For one, the FDA doesn't approve vapes in the same way it approves drugs. A marketing granted order means the product meets a public health standard, not that it's 'safe' in an absolute sense. Also, existing products that were on the market before August 8, 2016, were allowed to stay while their applications were reviewed, but that review is ongoing. So, you might see older products that are still awaiting a decision—they're not authorized yet, but they're not necessarily illegal to sell at this moment. That's a gray area you should understand.

Another thing that didn't change: your responsibility to do your homework. The FDA database is a tool, but it's not the only factor. State laws can add extra requirements, and you should always check with your state's regulations.