Vault guild

[jibouil]

hello i wanted to know if at lvl 11 of a guild there was 60 free slots.
I bought 100 gold the second vault before the lvl 11 of the guild

the guild passed lvl 11 but there was not the unlock of the other slot.

I made a mistake and I will not have to buy the slot before lvl 11 ? or we need to buy all the slot and there is no reward for the vault 2 and 3 at lvl 11 and 23 of the guild ?