The theme sets the delimiter using a WordPress filter:
$delimiter = apply_filters( ‘weaverx_breadcrumb_delimiter’, ‘→’ );
You could create a child theme with a filter that overrides the default ‘weaverx_breadcrumb_delimiter’ character in the child functions.php file.
Weaver Xtreme also can use the Yoast SEO breadcrumb capability. Simply setup and enable Yoast Breadcrumbs within the Yoast plugin.