That website is a fake website. The real one is taler.net. See the discussion in the email list: http://lists.gnu.org/archive/html/taler/2018-01/msg00009.htm...
Re:Ending Bitcoin Support
by confounded on Friday February 02, 2018 @01:22AM
(#16288789)
Wow, that’s pretty serious, thank you for pointing it out!
https://gnutaler.org/