I had warning on my page and message showed up. Message is ok, but there is argument missing %view-name. Probably it couldn't be set while i have deleted my view (btw it was the reason this message showed up first place..)

RelatedContent uses views as its source of nodes. The specified view %view-name doesn't exist any more. Please, go to the settings of the content type "simplenews" and select another view.

thanks for Your module! I appreciate Your time :)