User Name and password For downloading Quip 2.2.1 for Window

I want to download Quip 2.2.1 , but it is asking username and password,
I feel it is free , then what should i give


I tried to download QuiP from and this does not prompt me for user/password. Is this where you are downloading from?

Stuart Fyffe-Collins
Software AG (UK) Ltd.

Dear Stuart Fyffe-Collins
From this page only i am trying to download after accept button new page
opening it also opening the downloading tool when i clicks on the start download button of the downloading tool the Authentivation Required Dialog box is opening asking for user name and password