We are aware that some Agency users see that their "Member since" date shows as "January 20, 1970." Our engineers are working to get this resolved.
We'll update this thread once we have more information regarding this issue.
Edited to add:
This issue is resolved and we will be closing this thread from further comments. However, if you still experience the issue mentioned on this thread please let us know by posting in Community Support section and we will be happy to assist you accordingly.