The buttons in my theme template have no styling

The old template call, <?php echo TRSS_Render::buttons(); ?>, did not load the buttons' styles or script, so on a page without automatic buttons they came out as plain links and Copy link did nothing. Replace it with:

<?php if ( function_exists( 'trss_share_buttons' ) ) { trss_share_buttons(); } ?>

That loads what the buttons need, and the function_exists() check keeps the theme working if the plugin is deactivated.