Fill & Sign - Incorrectly Changing Document Date Formats

Hi,

I have a problem where Fill&Sign is incorrectly changing the date formatting on Excel documents.

I have set up an example excel spreadsheet, but behaviour is the same on our actual excel spreadsheet. (see attached example spreadsheet). I am using the web version of Fill&Sign.

The excel document has dates formatted as dd/mm/yy, with cell type as date. (see screenshot Excel Screenshot.png)

When the document is loaded into Fill&Sign, it changes this to mm/dd/yy. (see screenshots Fill And Sign.jpg and AdobeSign Screenshot.png).

If I convert the excel spreadsheet to pdf first, then add the pdf to Fill&Sign, there is no conversion.

I have my profile language set to English(UK), which is dd/mm/yy format as standard. 

I cannot find anywhere else to change date preferences. I also cannot easily change the excel spreadsheets themselves, as they are created by external programs. I would prefer not to have to pre-pdf as it creates a more complex workflow and potential errors with choosing wrong document versions.

Is there any way to have Fill&Sign not change date formats?

Thanks