The WordPress service makes it easy for you to cross-post and promote your content.
Here are a few things to double-check to make sure it works as intended.
Make sure XML-RPC is enabled for your WordPress blog
Make sure the username you have activated has full Admin rights (NB that if using 2FA for your WordPress account you will require an application-specific password)
Double-check that the Blog URL is correct and that you're running the latest version of WordPress
- Make sure that all your WordPress plugins are up to date
If you’re still having issues, you can still trigger IFTTT Applets by new blog posts with the RSS Feed - New feed item trigger, using your site's RSS feed