Action Network ID attached
Private data embeded in links VERY IMPORTANT - don't use links that you've copied out of other emails. Links from Action Network email contain tracking links and people's personal Action Network ID's etc.
The error you get is a pop-up box list this...
The cause :
e.g https://www.surveymonkey.co.uk/r/CZZX5DN?link_id=2**&can_id=071ccc07c7xxxxxxxxxxxxxd003**
If you copied the link from an Action Network email that you had previously received - the link will have your personal ID attached and info about the email it was sent from. You don't need any of the information after the question mark.
The solution :
In this case you would just use https://www.surveymonkey.co.uk/r/CZZX5DN
This goes for other links with use info in - eg. some google links or links to Facebook or a fundraiser. Just cut out the question mark and everything after and make sure the links still works and just use that instead.