Players Losing Certain Data

Hi, I released my game a while ago, and I’ve added a bunch of new data. Players are starting to lose CERTAIN Data and then it restores if they leave and join back a few times. I’m not sure whats happening couldn’t find any resources. Im using UpdateAsync

How exactly are you Handling the Data?

Doesnt really make sense that the Data is randomly lost, then back again unless you arent applying the Data correctly.