OK, thanks Zoe.
Then I find this odd as it seems you added new Profiles from this file yesterday. Usually, if there are Unmatched Suggestions, the Add button will not appear.
So did these, for lack of a better term - phantom matches, appear again and stop you from Adding since yesterday?
Please take a look at the Add & Edit section above the List of Names and does it say Hide or Show Completed Rows? If it says Show Completed Rows, please click on that to show those rows. Then in the last column of the List, click on WikiTree Profiles and this will sort by whether a name has a Suggested Match or not. If no Suggested Matches appear in that column, click again to reverse the sort order.
If these Suggested Matches don't show up, we'll just have to figure something else out. One or another, we'll get to the bottom of this.
Oh, one other question. How many names are there in your file? And what is the number completed to total? OK, that was two questions. ;)