How to delete APM version entirely

Hello, I need help from here. I accidentally installed the amp plugin into my website, now pages on mobile phone showing in amp version, which is not pleasant to look at. Any one can tell me how to delete it entirely and make my website back to how it used to look like?

tried to inactive and deleted amp plugin from my WordPress, it didn’t help.

will appreciate it for your help.

Thanks!

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