I has found one domain September ssl expired. But it's update failed unit to Oct. I has report to bug tracker.
Well, you don't provide us sufficient information. As always when you're reporting an issue with a plugin, you need provide us with the following information:
- Distribution and codename
- i-MSCP version
- Plugin version (here, the i-MSCP LetsEncrypt plugin version)
- The letsencrypt logs for the renewal failure, located in the /var/log/letsencrypt directory
- The i-MSCP plugin logs, located in /var/log/imscp directory
There can be some failures time to time due to the fact that the Let's Encrypt infrastructure can become unreachable and so on... but generally, those issues are solved in the next minutes. That's why the plugin automatically retry for the pending tasks every hour (here, the renewal tasks). Now, without the logs, we can't say anything more. There can be a bug in the plugin itself but it is difficult to say what's going on without further information.
Thank you for your understanding