Referenced AMP URL is not and AMP-New- no changes made to site

ampwp-90cad2a3-b604-547b-9a0c-674055607f87

I have no clue as to what is going on. I have made no changes that I recall. Although I did upgrade my theme a few months back. I am not very good at solving this type of thing and would need assistance. I tested the first page in AMP test and it appears to not be valid. I thought the AMP plug in added or copied the pages as AMP pages. Any guidance on this as would be great as I will have to enjoy a huge learning curve to solve this. Please assist.

Affected pages

https://psychology-info.com/gender-neutral-explanations-for-intimate-partner-violence?amp

https://psychology-info.com/areas-of-the-brain-involved-in-hunger?amp

https://psychology-info.com/the-inner-critic?amp

https://psychology-info.com/definition-of-physiological-psychology?amp

https://psychology-info.com/pharmacology-in-personality-disorders?amp

https://psychology-info.com/motivational-interviewing-therapy?amp

https://psychology-info.com/confidentiality-agreement-template?amp

https://psychology-info.com/b-f-skinner?amp

https://psychology-info.com/confidentiality?amp

https://psychology-info.com/areas-brain-involved-control-emotion?amp

https://psychology-info.com/physiological-psychology?amp

https://psychology-info.com/modify-the-aarke-carbonator-3?amp

https://psychology-info.com/areas-brain-involved-visual-function?amp

https://psychology-info.com/areas-of-the-brain-involved-in-auditory-learning?amp

https://psychology-info.com/abc-model-of-crisis-intervention?amp