When will I be able to activate my account?

I got accepted to LB today (they sent me an email). I tried activity myCSULB account, but am not able to. Have people had this problem, even if they send you an email? When will I be able to activate it?

I believe in the 48 hours or so. But i’d check occasionally I was able to activate it the same day.

@Zygole thank you!