yarn install fails with https://cache.sugardev.team unreachable error

I installed successfully Sugar v10 on my local machine,

but when I try to execute yarn install inside the root directory I am getting following error:

error An unexpected error occurred: "cache.sugardev.team/.../d3-sugar-4.13.0.tgz
: connect ETIMEDOUT

What I am doing wrong? Do I have to register anywhere to get access to this URL?