Unfortunately, when you upgrade to v9.3, the “Number of Words for Heading News before Read More” parameter is ignored.
It is the same for the “Number of Words for Sub Heading News before Read More” — despite being set to zero (0), the default no. of words is being displayed.
This is happening in NewsPress Options > Front Page Settings > Heading
Also in NewsPress Options > Front Page Settings > Sub Headings
Another issue with v9.3 is that the founts are reset.