They only patched client not server, therefore find someone that can send you yesterday’s client and u can use that to login. Edit: someone uploaded Friday’s exe: https://forums.daybreakgames.com/eq...017-cannot-log-into-beta.253100/#post-3723385
The beta server is always subject to coming down during beta testing - especially so close to an expansion launch. It is not expected to be up 24/7 during the beta period, as it's primary intention is to help get things ready for live servers. That being said, it should be up now.