Every spreadsheet I export to excel has a stupid coversheet to it that explains why the file might not work right. I would rather it just not work 100% right and have no cover sheet. Most of the people I work with aren't tech savvy enough to realize they just need to click another tab. So I am forced to open everything in office 365 to delete the cover sheet and re-save it. And I hate working on anything but my iPad or iMac. Work computers run SUSE Linux. Hopefully there is an easy solution to this.
I suspect this is a workflow issue as I have no issues editing excel files in excel on my iPad that I have stored on cloud storage (Dropbox or onedrive) and then opening them on PC or Mac. What are you using to work with spreadsheets on the iPad?