Hi Martha,
Are there any WikiTree ID's you can provide so that someone could take a look at the possible issue, and recommend a solution?
In general, when there are two profiles that look like they might represent the same person, you can go to the Rejected Match section at the bottom of one of their profiles, and select "Reject a Match" which will then bring up a screen where you can enter an alternate profile (ie, the one that doesn't match). Then you can select "Compare" to make sure they are different people, or can select "Reject" which will then mark both profiles as Rejected matches to one another.