Mags, I agree with Rosemary. Most likely they haven't completed the processing of your file. Until that's done, you can only do a 1 to 1 comparison. As I recall, on your 'home page' on Gedmatch, you'll have asterisks in front of the name of the kit if it hasn't completed batch processing. If there aren't any asterisks, then the processing should be complete. In that case, you may want to delete that test and then upload again. Be sure to not unzip the file before uploading.