Why can't I set different alert sounds for different apps?

I have a G4. It was running *very* slow so did a factory reset which fixed the problem. But now I can't seem to set different alert sounds for different apps. I formerly had a different alert sound for calendar, text, facebook, etc. Each had a different sound so I knew what was alerting without picking it up. After the factory reset I can only set one sound for everything. Any ideas are appreciated.

-Bryon

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