The distributed training of Leela Zero has finished and the server is closed.
Please consider donating your GPU power to one of these projects, both support high handicap and will explore ladders better than Leela Zero:
SAI: Originally a variable-komi fork of Leela Zero. Drop in compatible with LZ, can use LZ networks, may play stronger than LZ with same network. http://sai.unich.it/
KataGo: Supports multiple rulesets and board sizes, predicts score and territory, from a single network. https://katagotraining.org/
https://zero.sjeng.org