@andygill Hello, put the file in the Internal memory/Ringtones folder and check again. If it is still not recognized, it is probably an incompatible file. Try another one. Greetings.
"The quieter you become-the more you are able to hear..."
I use zedge.com to get my ringtones and zedge also puts the tone in the correct section in the phone and also allow you to directly choose it as the tone so you'll be able to choose it.
I wish you all the best. Take care. 😎
Daily Driver > Samsung Galaxy s²² Ultra 256Gb in Phantom Black.
The advice I offer is my own and does not represent Samsung’s position.
I'm here to help. " This is the way. "