letsencrypt证书不能申请

提示以下错误，新安装的ubuntu 20.04.01
切换到letsencerypt那个标签就会提示，点击申请也会提示
{ "keyChange": "https://acme-v02.api.letsencrypt.org/acme/key-change", "meta": { "caaIdentities": [ "letsencrypt.org" ], "termsOfService": "https://letsencrypt.org/documents/LE-SA-v1.2-November-15-2017.pdf", "website": "https://letsencrypt.org" }, "newAccount": "https://acme-v02.api.letsencrypt.org/acme/new-acct", "newNonce": "https://acme-v02.api.letsencrypt.org/acme/new-nonce", "newOrder": "https://acme-v02.api.letsencrypt.org/acme/new-order", "owemKDTBeYk": "https://community.letsencrypt.org/t/adding-random-entries-to-the-directory/33417", "revokeCert": "https://acme-v02.api.letsencrypt.org/acme/revoke-cert" }

自己手动安装certbot倒是没问题

手动安装certbot，申请后，切换到letsencrypt标签，能正常看到过期时间
但是仍然提示上述错误

有时候某些键名字会变化

我centos7以前也能自动申请，现在不行了
续签也不成功
不知道为什么

1. 该帐户1小时内失败的订单次数超过5次，请等待1小时再重试!
   
2. 响应状态:undefined
   
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4. 错误类型:undefined
   
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6. 错误代码:undefined

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