Apps interfere with my ReSound Hearing Aids

I have a pair of ReSound hearing aids which use bluetooth to send any sounds direct to them.

Great idea and work well with one exception.

I will have the sound set to a comfortable level but if I access Music or certain apps the sound is

turned up or down by the app to sometimes a ridiculous level. I have to then exit the app turn down the aids and

restart the app where I left off.

Anyone know if there a fix for this?

I have tried turning off sound in the apps but that doesn't work.

Any suggestions would be appreciated.