AMPforWP Addon

I am currently using AMP by Automattic but have enabled AMPforWP as an Addon mode. The issue is I recently switched from Yoast to Rank Math and I am seeing “The configuration of AMPforWP and Rank Math SEO plugin seems incorrect. Please go to AMPforWP plugin settings -> SEO -> SEO Plugin Integration and select Rank Math SEO plugin from the drop-down.” at my dashboard area.

Please how do I solve that issue since I am not using the plugin in Standalone mode

The page I need help with: [log in to see the link]