LockXLS saves protected workbook as protected files, but if you need to give customer unlocked version of your file - use Project Options | Excel Object Model protection options ... | Allow to save workbook in non-protected format using "Save As" method option. To save as workbook as unlocked file you should pass Unlock Code to LockXLS Runtime. If code is not passed - workbook will be saved as protected file.
You can find more information and sample VBA code for this option here.
Sample file, which shows how to save workbook in unprotected format. More ...