[Plugin: Participants Database] Lost links to single records

I am new to Word Press and the Participants Database — please be kind.

In the past two weeks, the links to the single records of our participants’ entered data stopped working. Instead of going to the associated URL, they went to a page that says “This is somewhat embarrassing . . .”. (Yes, we were making changes to the database and didn’t keep notes on the changes.) I tried to restore the URL by editing a single record and changing the permalink to the URL of the associated page. It worked beautifully for that record. But, then we noticed that all records were linked to that one page. We have put in a temporary fix by having the single records go back to the list of records.

Is there anyway to restore links to the pages for the single pdb records?

https://www.uvacse.virginia.edu/tiger-team-records/

Thanks in advance for your help!
Jackie