Need to delete all instances of this plugin

I configured this plugin and it broke my site. I am going to use a different caching plugin but I need to know how to remove every instance of this plugin since my WordPress error_log is filling up with the following error:

[21-Jun-2024 10:10:23 UTC] Connection refused [21-Jun-2024 10:10:23 UTC] Connection refused [21-Jun-2024 10:10:23 UTC] Connection refused [21-Jun-2024 10:10:23 UTC] Connection refused [21-Jun-2024 10:10:23 UTC] Connection refused [21-Jun-2024 10:10:23 UTC] Connection refused [21-Jun-2024 10:10:23 UTC] Connection refused [21-Jun-2024 10:10:23 UTC] Connection refused [21-Jun-2024 10:10:23 UTC] Connection refused [21-Jun-2024 10:10:23 UTC] Connection refused [21-Jun-2024 10:10:23 UTC] Connection refused [21-Jun-2024 10:10:23 UTC] Connection refused [21-Jun-2024 10:10:23 UTC] Connection refused [21-Jun-2024 10:10:23 UTC] Connection refused

There are thousands of them. You can see how quickly it’s being generated. I read that it is most likely the plugin is trying to connect to Cloudflare but is unable to. I set the plugin back to default settings and removed the API key and my login, but the error continues.

 

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