2015 Forester Bluetooth Issues

I've had my 2015 Forester for about 3 years and have never had an issue before. I got a new phone recently and I unpaired the old phone so I could pair the new one but then the bluetooth option just disappeared. Didn't have the time to look into it and had an aux cord so I was using that but then the aux option disappeared yesterday. So when I'm cycling through the modes in the car the only options are am/fm radio. Does anyone know how to fix this??