I found out through email first, I actually never went back to double check the mycsulb.
The email said,
"We are pleased to inform you that the School of Social Work has recommended you for admission to the Master of Social Work (MSW) program at California State University, Long Beach. Please find attached your letter and “MSW Acceptance Letter Checklist.” You must initial each box on the checklist, sign/date the checklist, and return it via email to CHHS-SW@csulb.edu (or mail it to the address below) within ten (10) days of the date on the attached letter.
Please note: you will be required to attend a mandatory MSW New Student Orientation. We will email you more details about the orientation once they have been finalized. Although you may receive a registration e-mail prior to orientation, you cannot register for classes until after you have attended orientation."
Attached to the email was the "MSW Acceptance Letter Checklist" and an acceptance letter, from what I got you have to sign off on the checklist, email or mail it in, and then they fully accept you. After I submitted those things they sent me a follow up email stating I was good to go. I would try emailing CHHS-SW@csulb.edu (it's the general social work department email) they're pretty great on replying in a timely manner.
Good luck and congratulations on your acceptance!