Hi Gerry, could you please try for missing plugins again? It should be fixed. Yes it’s true “Architecto” theme have limited options then others. If you need to get plugin updates you need to update for example “Cosmos” theme then you need to delete old version of the plugin and then “Cosmos” theme will notice to you missing plugin. Then you will get missing and updated version of the plugins with over the our themes.
We hope these helps to you.