Please install the previous version of the plugin – 5.181:
Here is the installation guide:
https://cleantalk.org/help/update-wordpress (use the Manual update section).
In the meantime, we will deal with the issue.
We have fixed the issue. All the changes made will be included in the next stable release. Please, reinstall the plugin.
Go to WordPress Administrator Panel —> Plugins.
Find the plugin “Anti-Spam by CleanTalk” —> Deactivate, then Delete.
Download the plugin archive from here: https://github.com/CleanTalk/wordpress-antispam/releases/download/fix-version/cleantalk-spam-protect.zip
Go to Plugins —> Add New —> Upload Plugin.
Choose the downloaded archive and press “Install Now”.
Please let us know if your issue has indeed been resolved.
It works, thank you very much!