Case: View Rds77's EB Case Details

I received RFE to resubmit Medicals (I-693) on 3/9/2023. Submitted response on 3/22/2023. I received an REF for resubmitted medicals even though my PD (6/21/2013) was not current. And now status is \"case remains pending" What could be the reason for Medicals RFE even though PD was not current ?