I bought cyberpunk meanwhile the bundle was available and never got the mail.
Still today I'm waiting.
If you have already checked on spam folder and you didn't found any mail, the best you can do is to try to contact the support directly https://support.google.com/stadia (you will find the contact us option at the bottom of the page) the support will help you understand what happened and why you don't have received any email.
If you have already checked on spam folder and you didn't found any mail, the best you can do is to try to contact the support directly https://support.google.com/stadia (you will find the contact us option at the bottom of the page) the support will help you understand what happened and why you don't have received any email.