Encryption: How to build and encrypted form

To use encryption you need to enable it in your form settings. 

Please read this guide:

Encrypted-Forms-and-How-to-Use-Them

Note that when setting up encryption you will need to generate your keys. Please make sure to save your private key. And keep it safe. Because without the private key you will be unable to decrypt your data. We wont be able to help because we don't store the private keys on our servers.