BQ77915: 6 Cell BMS Schematic Review and Suggestion

Part Number: BQ77915

Tool/software:

I have designed a 6 Cell BMS. Stacking 2 BQ7791502PW accoring to the avilable documrnts but the problem is its not working i have checked AVDD Pin that is 2.5V-2.9V but FET is not own not giving the output.