DigitalOcean 1 Click install

Hi there I seen this topic gets posted but never really answered. Can someone please take a moment to tell me what’s wrong:

Ive setup the 1click install on DigitalOcean droplet

I want it to access via subdomin which is hosted on another provider
I changed the subdomain A Record to point to the Droplet IP address
I ran the lets encrypt command - no errors

I’m still unable to access it - Getting a error 404 on the page.

Even tried the droplets IP address straight nothing