I followed the steps decribed to make a connection between LR and WP.
After making connections with LR and a proper authentication, I get the following message
AgExportSession: recordremotecollectionnld: remote ID must be a number or string when publishing.
Please help on the second item
You'll probably need to contact the developer for support on this. It's unlikely that anyone here would be able to help with a detail of the plugin.