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Hi,
As you told the process that I have followed but still i got these type of mails.
Process is given below that is suggest by you
Please, deactivate the CleanTalk plugin with the Complete Deactivation option:
WordPress Admin Page —> Settings —> Security by CleanTalk —> General Settings —> enable “Complete Deactivation” —> Save Changes.
Plugins —> Installed plugins —> Security by CleanTalk —> Deactivate and Activate
This option will reset all plugin settings. Don’t forget to insert your access key.