The Divi theme is using the pipe symbol " | " to separate the Post's Meta tags:
You can change the pipe symbol " | " by following the instructions below:
Go to WordPress Dashboard → Divi → Theme Options → Integration tab → Header
Copy and paste the following JS code:
<script>
jQuery(function ($) {
$(document).ready(function () {
var post_meta = $('article .post-meta');
if (post_meta.length) {
post_meta.each(function () {
$(this).html($(this).html().replace(/\|/g, " *"))
})
}
});
});
</script>
The result can be seen below, where the pipe symbol | was replaced with a star *
Note: This code will change the pipe symbol on all the posts, including single posts, the blog module, and all archive/category/search pages.
Change the star * character in the code to your desired character.