WPSSO Schema JSON-LD Markup is an add-on to the WPSSO Core plugin – was that not clear in the plugin description?
WPSSO Core and WPSSO JSON should not interfere with any SEO plugins – WPSSO Core detects all the most popular SEO plugins and disables its SEO related meta tags (description and canonical, for example).
I would have suggested you post a question about that in the WPSSO Core support forum.
I’m not sure I understand your 1 star rating – why not just raise the issue in the support forum?
js.
BTW, a post to the forum would have helped you with this issue – if you add the following to your wp-config.php, WPSSO Core will disable all its SEO related meta tags. 😉
define( 'WPSSO_UNKNOWN_SEO_PLUGIN_ACTIVE', true );
I still don’t get the 1 star rating for something like this – are you sure there isn’t something else?
js.