求助：刚买的云服务器无法 ssh 连接

几个小时前刚买了个日本的云服务器，在蓝梯子买的，是 vpc 线路，购买完成后，实例创建完成。我尝试 root+密码进行 ssh 登陆，但是服务器主动关闭了连接，谷歌后发现要关闭代理，有可能封了 ip ；关了代理后，要么就是连接超时，要么就是让我二次输入一个密码，我填写 root 的密码后，就出现下面的错误：

👤 Starting a new connection to: "109.xxx.xxx.xxx" port "22" ⚙️ Starting address resolution of "109.xxx.xxx.xxx" ⚙️ Address resolution finished ⚙️ Connecting to "109.xxx.xxx.xxx" port "22" 👤 Connection to "109.xxx.xxx.xxx" established ⚙️ Starting SSH session ⚙️ Remote server: SSH-2.0-OpenSSH_9.6p1 Ubuntu-3ubuntu13.5 ⚙️ Agreed KEX algorithm: ecdh-sha2-nistp256 ⚙️ Agreed Host Key algorithm: ecdsa-sha2-nistp256 ⚙️ Agreed server-to-client cipher: aes128-ctr MAC: hmac-sha2-256 ⚙️ Agreed client-to-server cipher: aes128-ctr MAC: hmac-sha2-256 ⚙️ Agreed client-to-server compression: none ⚙️ Agreed server-to-client compression: none ⚙️ Handshake finished 👤 Checking host key: 8d:77:fc:65:ce:cc:e1:c4:4e:xx:xx:xx:xx:xx:xx:xx 👤 Host "109.xxx.xxx.xxx":"22" is known and matches 👤 Authenticating to "109.xxx.xxx.xxx":"22" as "root" ❗ Disabling authentication using publickey: Private Key is empty ⚙️ Available client authentication methods: password,keyboard-interactive ⚙️ Authentication that can continue: password 👤 Authenticating using password method ❗ Authentication failed (password) ⚙️ Partial success: no ⚙️ Authentication that can continue: password 👤 Authenticating using password method ❗ Authentication failed (password) ⚙️ Partial success: no ⚙️ Authentication that can continue: password 👤 Authenticating using password method ❗ Authentication failed (password) ⚙️ Partial success: no ⚙️ Authentication that can continue: password 😨 No more authentication methods to try

我尝试了谷歌+gpt 给出来的方案进行修改/etc/ssh/sshd_config ，但是没有效果。

目前我还是无法 ssh 连接，只能在蓝梯子的后台管理界面，有个 vnc 按钮，点击后可以进入服务器。

求助大家，我该怎么解决？