Unable to connect to docker container deployed on DigitalOcean droplet via browser

I am scratching my head over the issue I am currently running into. I am trying to deploy this open-source software https://github.com/CitizenLabDotCo/citizenlab via docker using a digitalocean droplet. I have very little experience regarding docker and VSP but have learned a lot since taking on this project. I am using their deployment guide https://developers.citizenlab.co/start-deployment/ and I am using the droplet public ipv4 address as the host address because I haven’t purchased a domain until I am able to get it to work. Well, I am not running into any errors but after I get to step 8 and run $ docker-compose up -d, I am unable to access the web platform via the digitalocean droplets public ipv4 address and the port the frontend is utilizing (:3000, I have been able to get it to work on my local machine and accessing it via my browser)

Can anyone with more experience take a stab at following their guide and maybe explain what I am doing wrong and/or missing? I’ve googled for days looking for an answer but to no avail, any help would be appreciated