Firebri6

Just installed new pool in late April with Hayward aquarite gold line salt generator. Display reading for salt level has been 3600-3800 from day 1. I have checked salt levels with professionals and consistent readings from 2600-2800. Now I am having trouble keeping chlorine levels normal. Any suggestions? Have tried: Cleaned the cell, had cell tested and passed, recalibrated salt level with same result. I really appreciate any suggestions