What is the next step after setting up Let's Encrypt SSL on DigitalOcean's Dashboard

Hi,

I have followed this tutorial: https://www.digitalocean.com/docs/accounts/security/certificates/

and created a new Let’s Encrypt certificate on DigitalOcean’s dashboard.

During the creation, in addition to my domain name and its www. version, I added 4 more subdomains. The creation seems successful.

However, when I go to one of my subdomain, where my web app is running on, I can access it using HTTP, but NOT HTTPS.

I am wondering if I have missed a step or two that I should’ve done after creating the certificate on the dashboard. Note that it doesn’t exist on the tutorial, so I assumed that’s all I need (Loving it though, since it was so simple and easy).

A bit more info:

• My domain will be redirected to Squarespace.
• All my subdomains are connected to their corresponding Droplets (3 droplets used here).
• For my web app I am using Apache and already set-up a simple VirtualHost file to have the app hosted at port 80.

Thanks in advance.