You can download the new version of the application through the following link: https://jeevanpramaan.gov.in/app/download
However, it appears that you need to have a biometric scanner in order to generate the certificates and created the necessary papers. It's impossible for me to provide the instructions since the software will work only in you country and with the necessary device.
After you install it, go to Help > Contents. You will find all the help that you need in that section of the Jeevan Pramaan.