Gallery just does not work correctly

https://www.iphone-arts.com/portfolio/portfolio/

2 main things:
1 – some of the enlargements say they are on the ‘about’ page rather than the correct portfolio page. ie: https://www.iphone-arts.com/about/spring/

2. Previous and Next buttons seem to go to random images as opposed to the order they are in the portfolio page. I DO NOT have the Random Order selected in the gallery settings.

Thanks! ASAP would be swell!!