Replaced Android, lost motion alert sound.

Yesterday I had to replace my Android phone. Replaced a Motorola Z2 with a Z4. All apps tranferred just fine, though I had to re-enter credentials for those that use them. With that my Ring app is working just fine, with one exception. It has lost my designated alert sound (a jarring sonar ping sound) and replaced it with a very (VERY) quiet tinkling chime. I've found no way to tell it to use a different sound file, and the new sound remains barely audible even with all of the phone' s sound channels set to max volume.