I have figured out how to solve this issue and I'm posting it here in case it helps anybody else.
Despite having only one printer, it seems that I had to install the same printer twice: once (printer 1) for the USB connection and again (printer 2) for the Bluetooth connection. It is the same device (only one printer) but because it connects to the computer in two different ways, the computer treats them as two separatedly ones--or at least this is how I interpret it. The printer that connects through Bluetooth is the only one showing up under Blutooth devices. And, it works!