If I were you, my first point of contact would be the same recruiter who contacted you initially. A simple mail saying 'I see the job posting is still active and I am interested in perusingpursuing it. How would you suggest we go forward with it ?'
The recruitersrecruiter's reply should give you a fair idea of where the company stands with the vacancy. In a few days, if there is no response from the recruiter and you are still so interested in the vacancy, you could apply on the company's website for the job. Good luck.