If you are an existing user, you may redownload the app from the purchase history in your iCloud.
Please go to your App Store, click on your account and choose a tab "Purchased"
Please refer to the video for details: https://www.youtube.com/watch?v=QjC0aphIsB0
You can also find everything you need on our new Web Client - www.tango.me
Thank you for choosing Tango!