Hey,
To start off with, I’m not the developer of this plugin, just have some free time to help.
That aside, I’m unsure if you have researched what AMP is, but by design, AMP will only show content that AMP validates, so you won’t be able to show all of your content anyway, however, for the content that you can, you would probably need something more custom anyway, which a WordPress plugin isn’t going to do for you automatically.
As for the validation issues, I can see you do have a few here: https://validator.ampproject.org/#url=http%3A%2F%2Fwww.falmerinc.com%2F, these are likely due to some plugins that you have installed, and would require the devloper to disable their functions. If you want a quick fix, just diable the offending plugins.