As soon as you have shipped your order (via the store button at the top right of the website) the billing period starts.
If you have received a voucher from the consultant, redeem the voucher and the billing only starts after this voucher period has expired.
If you do not have a voucher code, you can request one and you will be given the first month (maybe for longer). Enough time to set up, start and get to know the VISYT system.