If you don't have your own web hosting solution already set up or just need a quick and simple way to host your file, hosting a payload, Excel or image file on Dropbox is a quick and simple solution.
Creating a Dropbox account and uploading your file should be straightforward.
Using Dropbox with custom widgets and image widgets
Once you have a suitably formatted data file uploaded to your Dropbox account you will need to copy a link to the file so that your widget knows where to pull data from.
To do this:
1) Locate your file on Dropbox, right-click it and and copy a sharing link into your clipboard.
2) Load up the widget that requires a link to your data file and paste the link from your clipboard into the URL feed field.
If applicable, configure the rest of the options in your widget and then save it. You should now be able to view your data.
Note: if you're looking to use other cloud file hosting solutions such as Google Drive, results may vary. In most cases if you can create a direct link to a file that sits inside the platform then that should work. Most services though tend to add a redirect or some other obfuscation which will create an error, so this is something to be aware of.
Using Dropbox with Spreadsheets
Once you have uploaded the xlsx file your Dropbox account you can create a connection to it from within the Spreadsheets integration.