Our databases are unmanaged, so automatic snapshots, WAL recovery, and PITR aren't available unless you set up volume backups or PITR yourself. We don't recover data lost to user-initiated actions. Going forward, enable volume backups on your stateful services so you can self-restore if this happens again.

I did setup a PITR, that’s how everything started. It contained 0 backup so i deleted it. Are you tell me that there’s nothing i can do? Or nothing the support team can do to assist with this? Can export/dump my other project db into this one? If yes, can anyone assist with it, please?

Both your Postgres services (Platform-Postgres and App-Postgres) are currently running successfully with their volumes attached and data present. We don't restore data lost to user-initiated actions, but from what we can see, your production databases appear intact - if the data you need is in one of those databases and you want to copy it to the other, you can connect to both using their connection strings (found in each service's Variables tab) and use pg_dump/pg_restore yourself.

I did that, i copied the data from platform to app; however, i still can’t log into app.

Are there any errors in your Postgres service?