Style Sheet Changes

I’ve been using the plugin for a decade, and I’ve always used the same style sheet tags:

.series-nav {background-color:#E1DBE6; width:100%; margin-bottom: 25px; margin-top:0px; padding-top:2px; padding-bottom:2px; text-align:center; margin-top:25px;}
.serieslist ul{padding:0px; margin:0px;}
.serieslist-li {list-style-image:url(https://www.crimsonglass.org/wp-content/themes/liason2019/img/bullet.gif); padding:0px; margin:0px;}
.seriesmeta, {background-color: #270639; color: #E1DBE6; margin-top: 10px; text-align: center; font-size: 11px;}
.seriesmeta a {color: #E1DBE6;}

But since the most recent update, my style sheet is no longer being used — if you go to the sample URl, you’ll see the series meta information at the top of the page and the navigation links are now styled with the default layout. I didn’t change anything in my code.

I tried to find the new style tags, but it’s not working (I added pps-series), and I don’t see anything in the admin panel that would stop this. I have the box for “use default CSS styles” unchecked, so that shouldn’t be happening.

The page I need help with: [log in to see the link]