...
Once you have selected files to upload click on the UPLOAD NOW button to begin the upload. If the files are large this may take a few minutes. You will see progess are the files upload:
Do not refresh the browser until the files have completed upload and are shown in the Files section.
You can upload files with the following types: .csv, .doc, .docx, .gif, .jpg, .png, .pdf, .txt, .wrf, .xls, .xlsx, .xlsm, .xltm, .xml and .zip.
...