Post is not Tweeting

Hi. Thank you for this wonderful plugin. It works like a charm. However at one point it is failing me.

I am using “RSS Aggregator” and its “Feed to Post” feature, which reads a news feed and automatically posts it as a STANDARD WordPress post. It is an automatic process.

When it publishes a post, it is not tweeted. However, when I manually open the post and Update it, the tweet is sent.

In my settings, both “Update when Posts are published” and “Update when Posts are edited” are checked.

How can I fix this issue?

Previously I was using NextScript, which worked without any problem.