Several free spins bonuses in a row are prohibited, as well as several multiple accounts. Hence, if your recent transaction included a free bonus, you must make a deposit before using this free spins offer.
Claiming your Free Spins is restricted to particular time periods. Each set of Free Spins can only be claimed once within the designated time slots:
10:00 - 11:00 CET
12:00 - 13:00 CET
16:00 - 17:00 CET
19:00 - 20:00 CET
22:00 - 23:00 CET
You are allowed to claim the bonus once per time slot.