Have you enabled Macros (enabled editing and content) in the MS Excel Offline Response? If you have not enabled macros (enable editing and content) then this will cause problems with filling in and uploading the offline response.
Please enable Macros (enable editing and content) before working/responding on the offline template. You will notice that once a question is answered, boxes appearing in Orange will change to Green.
We regret the offline response template will not work with Apple Mac users, as the macros in MS Excel are not supported.