I'm sorry this question has been asked before and answered.
The flask app does not serve outside of the local host network.
This is what I've tried before.
What I've Tried
is it something I'm not seeing yet. Please help. Thank you in advance.
Sorry for the vague answer but I cant help much without actually looking at the code. But have you tried running it on an apache server, I did that for a small project in my home and it worked alright.
This is the resource I found useful myself: https://dev.to/willmvs/flask-deployment-on-windows-139b