You can use our US iTunes account if you can't find it in your itunes version:
Download the .ovpn files from your client area to your device:
Your selected configuration file will appear. Tap on “Open in OpenVPN”.
If it’s the first time you’re adding a configuration file, the OpenVPN Connect app will ask you whether you wish to import the file. Please tap on “Add”.
Later on the following message will pop-up. In this case, please tap on “Allow”.
Tap on the slider and you’re connected.
You can download multiple configuration files and copy them to the OpenVPN Connect app the same way as described above. After that, you can easily switch between multiple servers.