Pref Server: In-Game Gil Reward

Date & Time: July 28th 2017 (guesstimate)
Frequency: Current
World name: Siren
Character name: Nishizumi Taichou (Renamed to: Megumin Crimsondemon)
Retainer name: Lenoria
NPC name: N/A
Monster name: N/A
Class/Level: BLM 44
Party or solo: Solo
In-game time: 1 day, 14 hours, 16min
Area and coordinates: N/A
Housing: N/A
Steps: N/A

I made a new character to play with some friends on Siren. I've hit 30 and got a notice for receiving my extra subscription days, but I never received a gil reward.

I'm wondering if there is a bug involved, or if I misunderstood the criteria to receive the gil?

Thank you!

Gil reward is only on New Worlds not on Prefered Worlds.