Jess,
The fact that 2 profiles have the same WikiTree ID means that they are *not* two profiles! Each profile has a unique WikiTree ID, so somebody must have merged them already and the system has some kind of glitch by showing the profile as a match with itself!
When a team member sees this question, they will manually fix the glitch, I'm sure, but there is nothing for you to be concerned about - there is already only one profile.
Of course, if it bothers you then you can fix it yourself by removing the rejected match. There is a link near the match information that allows you to do that.