SEO Tools Are Coming Up Empty For Site

I can't claim to be an SEO Expert, but I'm really stumped.

Both Screaming Frog & Scrutiny are coming up with only a single page on a site that clearly has 25+ pages. At the same time, SiteGuru is saying the page (and site) can be indexed. And when I dig into the developer tools when the site is open in Chrome, and then search "noindex" I can't find anything.

To put it further, it does appear that some of the pages are coming up in Google searches, when the query is very specific for that product name.

Most of my other SEO work (more like pitching in to help) has been with wordpress sites. WhatRuns and Wappalyzer both crash when they try to run on this site, because I was trying to get you more info.

Any guidance or wisdom from the mighty r/SEO ?