Code for 50 free Primogems for Genshin Impact in preparation for Ganyu coming out next week.
Limited amount of redemptions though so would recommend claiming asap.
Also thanks to @Yub below for the reminder, code for 60 Primogems is still available.
PC/Mobile Users: Follow the linked website and login to enter and redeem the code.
PS4 Users: Go to Settings > Account > Redeem Code and enter the code.