Fly not connecting to supabase database

I created a Fly.io app that connects to a Supabase database. Last Saturday, it suddenly stopped connecting to the database, but on Sunday, it started working again. It had been working properly until today, another Saturday, when it stopped connecting again.

I tried connecting to the same database using an externally hosted app, and it was able to connect successfully.

It seems like the Fly server might be blocking requests to the database on Saturdays.