More customizable features, particularly in mobile app; better preview of document and images stored in other cloud services (like Google Drive, Dropbox and so on)

The API is awful. We needed to develop a batch load tool in order to send automated events to Tibber API. The current API version is not well documented, i.e. the current version of the API in the software doesn't correspond to the web-documented API. We had to imagine parameters and names. We had difficulty making it all work, as the login/SSO mechanism was not properly explained so that we could perform external logins to the API and use their features.