I would expect the text file to be the correct one. Add it as a mic cal file (to the correct input device) in REW preferences.
The ODS file ought to be a spreadsheet with calibration data in table format. Any modern office suite should read this. You don't have LibreOffice at least?
Note, stock cal files can be worse than useless, so be warned. No manufacturer has time to individually measure a cheapie mic like this.