So I'm having the same issue as OP with the control panel showing 00% chlorine production even though the app shows 55%. Only difference between me and OP is aqualink app doesn't show water temp. In the picture below you see it say "pool temp short". So could a bad aqualink temperature gauge be causing this issue with the salt cell?Walk away from the Aquapure control panel.
Answer our questions only using iAqualink app or web connect.
What water temperature shows on the app?