Hi @Store_Direct, sorry for the delay, It was a holiday in the US, so I did not see your message until today. Taking a look at both pages, they both appear to have the tracking code on them, and they're both non-HubSpot forms. In the section here: https://knowledge.hubspot.com/articles/kcs_article/collected-forms/use-non-hubspot-forms#forms-that-work-with-the-non-hubspot-forms-tool, you can see that one reason why this might not work is that:
Form was introduced after the page completed loading. The tool scans the page as soon as it loads and listens to submissions on forms that were present at that point.
The first issue is more likely the issue as I can see a lot of eventListeners attached to that submit button for the page that does not submit properly, but the one that does submit has far fewer. To fix, you'll either need to remove the event listeners from your submit button, come up with a JS workaround, replace your custom forms with HubSpot forms (though you won't be able to style the forms to your liking as a Free Account), or use the Forms API to submit data to HubSpot. The Forms API is more reliable overall than non-hubspot forms due to the caveats that are described in the knowledge article I linked, so I'd highly recommend using the API if you're able to.