We’ve had no other reports of issues with Late Swaptimizer. I would clear your browser’s cache or try a different browser. I personally just swapped on DraftKings with no issues. You can also try restoring your settings to default under the advanced option tab as there could be a setting restricting you.
If still having issues you can email your CSV and issue to support@fantasycruncher.com and someone will take a look.
If still having issues you can email your CSV and issue to support@fantasycruncher.com and someone will take a look.