This article helps to troubleshoot whitelisting issues using the click-time service, the error message below :
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The error might be caused by a browser's changes, such as a newly installed extension or plugin.
Another cause could be related to the custom HTML text page , usually related to HTML tags error.
If the service allowed to whitelist certain domains previously, then suddenly you started to receive an unexpected error, you may have to check the steps below :
1 - The browser has no additional extension or plugin that has been recently installed.
2 - Clear the data cache of the browser.
3 - Check the Custom HTML block text page , there might be a case where you do have an HTML tags errors.
4 - If the block text page had HTML tags error, click reverse to default text and try again.
Note : If the above steps did not help in fixing the Issue, please contact your support.