We're sorry to announce that we're experiencing some issues with one of our servers, the one that runs yunohost.org main website. Documentation is available as raw files here https://github.com/yunohost/doc.
Additionnally, registration and updates of DynDns domains (*.nohost.me and *.noho.st) are unavailable too.
We're working on it, and hope that we'll be back soon.
The YunoHost team.