How do I connect to a postgres connection pool with managed databases?

We have decided to use Postgres and digital oceans managed databases for our next project. This database will handle about 10 million page visits a month, with certain points having spikes in traffic. We created a database, and were able to connect to it just fine.

We created a new connection pool, and the connection details are different than our other database. It has a different port and a different database listed. When we try to connect with the connection pool details, we get the error database "test-pool" does not exist

We are also using sequelize 5.xx and node js. Haven’t had any issues up until trying to utilize connection pooling. Any ideas or suggestions?