Thanks for responding. I had another pre-set alert tone, but it was the same one I use for my iphone. I only changed the tone after updating to 16.3.1 (so I don't actually know if I would have been able to before). I have restarted my ipad twice, but it won't change. I only have pre-set tones, I have not downloaded any others.
Maybe it's just a simple thing - this is what I'm doing. I go to settings, mail notifications, sounds. Under alert tones, I have went back to Aurora and it doesn't change from my previously selected tone which was classic-Choo Choo. I will add, I also played with lock sound, on now it's off again. I read today where someone turned their bluetooth off, then back on. Right now I have bluetooth set to on on both my iphone and ipad.
I have been trying for at least a week, so I guess I can live with it, but the sound is lower when new mail comes. Sorry, I've probably not explained my problem well, but I hope you have an idea of what I am doing wrong? Thanks