Call NOW team not Zerodha Support team. They will provide phone support to install or reinstall NOW platform.
Call Zerodha support team after NOW has been installed. Zerodha team will provide you with the latest version of NEST through a google-drive link, which could be extracted and copied...
This link to download NestPlus is not working. https://plus.omnesysindia.com/NestPlus/download/
No, I am still using NOW, as its provided by NSE. I am apprehensive about a software provided by my broker, they can monitor anyone's order and do all sorts of things.