Biglion coupon code

Good day. I want to return to LINGQ and recently read about special offer coupon http://krasnoyarsk.biglion.ru/deals/ligq-62/.
Can I use this coupon for my existing account for 1-year BASIC program or I must begin with new one? If I buy coupon - how payment will be accepted?

Hi! This deal is actually a promotion that is available to new members only and is designed to help spread the word about LingQ.