In the document view (and also preview) pane, Unouit currently is only able to display HTML and PDF content correctly. In case HTML content looks mangled or is maybe not displayed at all, you can file a request to improve the content displayed by clicking on the “thumbs down” icon in the upper right corner of the display pane.
When it comes to uploading own documents, you currently can only upload PDF documents to your collection.
Office-Documents (like Word, Excel, etc.) and XML files, as well as Videos and Audio media files are currently not supported. Let us know, if you need to work with these types of documents or media files. Just let us know by writing to info@unouit.com. We will then consider to add this feature at some later point in time.