Hello, I think I may have run into this person. Your description sounds familiar and asked for link to my Freelancer profile and add to Skype. Not sure why they needed link to my Freelancer profile, shouldn't project poster be able to see my profile??
I contacted him on Skype to gather more info and asked for an example article (health and nutrition) which they provided. The article was poorly written, something more of an undergraduate college student writing a research paper.
This person specifically was looking for someone from Philippines (didn't even spell country correctly). Never answered any of my questions that I asked, but was very aggressive in what they required. Articles within 2 hrs, 5-6 articles/day, 5-6 days/week. They asked when I could start, I stated May 5th. Then they said that wouldn't work out. I replied, "I misunderstood your requirements, your project description states bids close in 6 days".
Here is link to the posted project: https://www.freelancer.com/jobs/project-13864524/
Thankfully, I dodged a bullet on a scammer. Although mine stated to track time on Freelancer and then use secured pay. Sorry to hear about your experience. Did you report it to Freelancer and what was their response?