Hello, JoL!
The Monthly Gift Codes are provided the first Wednesday of every month, after weekly scheduled maintenance. Hang in there, the wait will soon be over. 
This thread was added on December 02, 2022, with posts from Wissp.
4 hours ago, tincho1000 said:Hello @Wissp, do you know if there is any update on current month Gift Code release?
The codes have been posted here -
https://forums.lineage2.com/topic/25924-special-monthly-gift-–-december-edition/