I try to import a newsletter with a custom header and footer. The unsubscribe is foreseen. And as the notice in the tool suggested me I also included the $[HF:ORGINFO]$ tag. But on import I get a notice that the merge tag $[HF:ORGINFO]$ is disabled or deleted. But I have no idea where to activated it or add it in orde for it to work. 

The strange thing is that yesterday the import worked like a charm.