To upload a file using the admin, go to Files, click on Upload File on the top right corner of the page.

You will be prompted to fill in the path, select the files and choose if you want to allow public access to the files.

Don't use name for the files using <space> or special characters.

Folders can be created while uploading your files, to create them, just add forward slashes in it.
For example: to create a folder called images and a folder called icons inside, just type images/icons.

Select the files that you want to upload. Click Upload and your files will be uploaded to TagoIO.

Public Access means that if you share your file's URL with someone. Also, use Public Access= Yes when using the files in the links inside widgets.