127.0.0.1 Refused To Connect (Coded in Codecademy)

I am quite a beginner in coding, trying to complete a programming assignment focused on Python. I followed along with Tech with Tim's YouTube video about "Python Website Full Tutorial - Flask, Authentication, Databases & More". Link: https://www.youtube.com/watch?v=dam0GPOAvVI

I have followed the code exactly up until 13:36, where he accesses the website url (http://127.0.0.1:5000). I have tried this, yet I got a 127.0.0.1 refused to connect error.

I have tried to follow many different tutorials on how to fix this error, but to no avail. I tried:

• flushing the dns
• disabling the firewall (real pain)
• browser HSTS settings

I would have tried asking my teacher, but she already got lost when I tried to explain about front-end and back-end and claimed that I was "too advanced". I can't ask the other groups either as it seems they might not have started coding yet at all, and my own group does not specialize in coding, more on simple interface designing. In canva.

I am now starting to suspect that it might be a problem with the website I am using to code. I am using codecademy's workspaces since we are only allowed to code online because my teacher does not want to download any files on her computer. Should I perhaps change to another one instead?

I have downloaded pip yesterday and made sure I downloaded all of the necessary modules, but it doesn't help the problem.

This is the fourth day that I have been stuck on this on, and now I've really hit a brick wall. I'm stuck, and I'm not sure what to do next. I am no programmer, I don't think that I can even be classified as a decent one just yet. I'm simply a student who is forced to learn by myself because I can't rely on my own class to teach me.

NOW SOLVED by changing to VS Code instead, works like a charm. :)