Welcome to the forum. Blue and Me is terrible, sadly. It was designed in 2007 and barely worked with 1/2 the phones that were out back then, you've got almost no chance with anything modern. If it doesn't have an aux port, your best option for Bluetooth audio streaming is to replace the headunit with an aftermarket one.
When I have fiddled around with some of the buttons it comes up with 'aux' but has no cable?
I tried my old iPhone 6s and it wouldn't connect to that either. I have been looking at new head unit for the radio. Even tempted to take it to a fiat dealership and get them to do it.
I am already insane from trying things! Usb stick in into the windows port wouldn't work