s6 edge 925T fingerprint dead?

just done rooting and install twrp on my device on 5.1.1 ( tmobile 925T s6 edge ) without tripping knox using AOU kernel . some how fingerprint is dead and security notice kept poping up ( how to turn this off ? ) any way to fix this ? , also is there any good rom out there that i can flash right now without tripping knox ? . thanks