In this case, something is not right with the plugin or with the plugin configuration/server connection.
Please check the ‘Activity and Logging’ section of the plugin for any errors. If you find errors, please send them to my email address kisded@yahoo.com, with details about how to reproduce them.
If the log contains no errors, please be sure to enable the ‘Enable Logging’ and ‘Enable Detailed Logging’ checkboxes from plugin’s ‘Main Settings’. Rerun the rule (so the error can be generated) and check ‘Activity and Logging’ section again for an error.
If still no luck, please send me an email to my email address: kisded@yahoo.com with details on how to reproduce this issue and I will try to fix it if it is possible.