Air Explorer has added new cloud file servers in the new version. Transip Stack Storage is a German cloud server that gives you 1000 GB of free for your files. You can add it to Air Explorer easily.
First sign up in Transip Stack Storage and create your own account.
To fill the server gap you have to click in your name account in the web interface and click in “Configuration”. The server name alway has this format: https://youraccountname.stackstorage.com/.
Then you can work with it. Transip Stack Storage support in Air Explorer includes file searching, transfers to and from other servers, etc.