사이트 ssl인증 문제로 연결이 되지 않습니다.

오전까지 사이트 접속이 되다가 갑자기 ssl인증 에러가 떠서 조금전 

https://koreanvlog.com/136/ 이 게시글을 참조해서  ssl키를 새롭게 생성하고 

크론까지 설정했는데 아직 연결이 안되네요.

아래는 크론 테스트 결과입니다.

root@velomano-i:/home/ubuntu# sudo certbot renew --dry-run

Saving debug log to /var/log/letsencrypt/letsencrypt.log

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Processing /etc/letsencrypt/renewal/feedzone.club.conf

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Cert is due for renewal, auto-renewing...

Plugins selected: Authenticator webroot, Installer None

Renewing an existing certificate

Performing the following challenges:

http-01 challenge for feedzone.club

http-01 challenge for www.feedzone.club

Waiting for verification...

Cleaning up challenges

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new certificate deployed without reload, fullchain is

/etc/letsencrypt/live/feedzone.club/fullchain.pem

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** DRY RUN: simulating 'certbot renew' close to cert expiry

**          (The test certificates below have not been saved.)

Congratulations, all renewals succeeded. The following certs have been renewed:

  /etc/letsencrypt/live/feedzone.club/fullchain.pem (success)

** DRY RUN: simulating 'certbot renew' close to cert expiry

**          (The test certificates above have not been saved.)

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root@velomano-i:/home/ubuntu# 

혹시 어떤 문제인지 알수 있을까요?