Has there been a DNA test where the person had ancestors from every continent?

DNA-tests don't find your longdeceased ancestors. they find people with bundles of DNA (you have 47 of those) almost identical to yours - your (distant) cousins.

Are there people with recent ancestors from 5 continents? there have to be some

The Antarctic ones are kept secret. Neuschwabbenland isn't officially acknowledged.

at the 12 marker match-- I had one from every continent.

There have been 10 people born in or very close to Antarctica, according to this Wikipedia article:

https://en.wikipedia.org/wiki/Emilio_Palma

So, while it is physically possible, it would be highly improbable.

Unless there has been extreme miscegenation with penguins in Antarctica, no.

Since Antarctica is a continent, that would not be possible unless your ancestors included penguins.

only if the person is from america, europe or africa

its possible