Form submission working, yet action path isn't working

The site name is

The form works, however the custom success page doesn’t work. I’ve looked through the threads and from my understanding of action, I should be able to enter the receive page as it works on the website. Is there anything wrong with the code? I’ve referred to the js file as ‘/received’ under the action path within the form tag, yet I’m still running into this issue. I’ve referred to this link for other help across this platform, yet I’m still running into the same errors ( Please help me out!

hi there, i know you said you read some threads already, but just to check, did you see this?