1st: JB9BE7K5RQY3 (100 Stellar Jades + 50000 Credits)
2nd: HT8BX7JL89Z7 (100 Stellar Jades + 5 Purple Exp)
3rd: 6B9BFPK58Q3T (100 Stellar Jades + 4 LC Exp)
Link for redeem:
https://hsr.hoyoverse.com/gift
https://hsr.hoyoverse.com/gift?code=JB9BE7K5RQY3
Hoyoverse actually sends these codes via email. However mostly it always goes to spam so I get them from YouTube. But I’m sure that you can whitelist emails with codes.