Can't connect to manage database from my digital ocean droplet

I sipin off a digital ocean centOS droplet , configured and everything seems fine after going thorugh tutorials. I then purchased a managed digital ocean postgres db. It looks quite easy and so far so good. I manage to connect my DB with pgAdmin 4 from my PC, i even confirmed that my connection string is working from my nodejs app. I was able to connect and create y tables from my nodejs.

The problem is, my database refuse connection from within the droplet. I can test my manage database from local host and my PC, but the database and my droplet doesn’t communicate at all. My connection is always throwing timeout. I spent the whole day trying to figure out the problem, i even install pgsql on my droplet, tried the connections flags and couldn’t connect. I am confused and really wasn’t expecting the connect to be an issue here considering both my droplet and my manage DB comes from digital ocean. I couldn’t deploy because of this. Please what am i missing or doing wrong ? I confirmed by droplet has no firewall instance yet couldn’t communicate with the DB. Please any help would be appreciated, am really getting frustrated .