Me too. All the host is down: http://downforeveryoneorjustme.com/buildr.ege.io Even the Yocto image for UDOO QUAD is broken (https://www.udoo.org/docs/Software_&_OS_Distro/Yocto.html)
There is a special forum board for Yocto: https://www.udoo.org/forum/forums/yocto.46/. @graugans is the moderator of this board and the maintainer of the Udoo Yocto images.