184.108.40.206 and 220.127.116.11 in blocklist. Blocked by the state because of some other sites placed on IP. Check it out here http://blocklist.rkn.gov.ru/
Updates OS are not available. Please move your server to clean IP.
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I don't think they can migrate to a new IP that fast, but try calling them out on Twitter and/or filing an issue to their Github pages.
For the meantime, you can use a VPN (free VPN services will do since the updates probably won't take up more than 500MB) to fetch updates. Hope this helps.