You should pursue your PSAs/ CSAs until they either refuse to hear from you or their account has been cancelled.
In this business at SFI, it is glorious opportunities of uncertainties.
Your PSA or CSA who has not logged in for months, can show up on your "Movers Tab" and become active.
I have that experience as a leader of my team.
Each time that you make contact with them, have a positive expectation and never give up on them.