Update from the devs in Slack regarding the mining pool:

"Update : Pool is back online. We will monitor it closely to ensure everything is working as it should be. We are also in the process of moving the pool on to a much faster dedicated server with a pipe that is about 10 x faster than the current pool. We will also be changing the domain name and serving the new pool via https. We'll keep you updated."

EDIT: FURTHER UPDATE

"Update : Going to be taking the pool offline, effective immediately while we migrate to the new server. Once it's all completed and has been tested we'll let you know. Apologies for the downtime once again and thanks for mining with us."