So I created a DJ login and then deleted it, restarted my auto dj and noticed that the deleted dj login still works even after I restarted the auto dj.

thoughts , suggestions?

check if dj still persists in raw sc_trans configuration

well if its still working I would assume that it does.

yes the raw config files show only the new dj account and the old one is not listed

BUT

the old account cant still login.

Another thing is what you mean by saing that "old" dj logins still work ?

Do you mean broadcasting or logging in to Centova panel.

If you mean broadcasting then it looks like AutoDJ hasn't been restarted (i know you said that you restarted it).
Try to kill sc_trans process and then see.
You can check as well what dj's are currently able to broadcast by making sc_trans api call:  ListDJS

I mean the old dj login for them to connect their DSP to stream live.

I did restart it. Ill try and kill that process and see if it helps.