I'm not a scientists nor do I claim to be, but there seems to be a growing unified consensus online, the paper is not sound. Many various science blogs and news sites are calling the project questionable. There is no verifiable peer review and the brand new "acquired" journal is now owned by the author of the paper, Melba Ketchum.
It is also known that the samples acquired for the study were not properly vetted. Many submitters did not provide Ketchum with a sample of their own DNA to rule out contamination. Something that seems like a no-brainer when dealing with DNA that is supposed to look almost identical to homo sapien sapien. When I asked Justin Smeja if he ever sent a sample of his own DNA sample to Ketchum, his answer was quick and simple, "nope".