Ok, I did and it gave me this error for follow by mail: We noticed that your site returns a cURL error (?Error: A valid URL was not provided. ?). This means that it cannot send a notification to SpecificFeeds.com when a new post is published. Therefore this email-feature doesn’t work. However there are several solutions for this, please visit our FAQ to see the solutions (?Perceived bugs? => ?cURL error messages?): https://www.ultimatelysocial.com/faq
I checked with the hosting provider and they said everything appears enabled as far as they can tell. What’s the next step?