Salt Display not showing current salt concentration

The recently purchased 3.0 Salt System Electronic Chlorine Generator and is not showing the current salt concentration.  All other functions appear to be working properly and I have set up to current pool conditions per the Operation manual.  When the initial hook up before resets per the manual the Salt Display stated 1800 and was close to what the Local pool company was reading.

I have taken in Sample and tested at a local Pool outlet that I have used for years to test on 2 different occassions and Salt levels are acceptable.

Please Advise

Thank you

Michael Thome