Two citation style in the same paper

I used the APA 7th style for my thesis. And all of the citations should be like those (Klee et al., 1987), but some of the citations automatically showed as (W. Li et al., 2017).

In the red search box, it shows "(Li et al., 2017)", but in the paper, it turned to be (W. Li et al., 2017). and I didn't have any other similar citations like "Li et al., 2017".

Actually, it was (Li et al., 2017) several days ago, but I don't know what I have done to make these changes. and I could not change it back and get a uniform style. Thanks.
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