Hi Spine,
I’d suggest to load the Mood app via Audio Unit, which comes with much more flexible options and is Apple’s successor to Inter-App Audio.
In addition, Apple already announced that Inter-App Audio will be discontinued.
Found a YouTube clip where a user uses both apps together: https://youtu.be/6RaKbusPlz4 + https://youtu.be/Kgld7HhkCsE
Regarding the other apps, please let me have a bit more details (full app names, more detailed problem descriptions) in order to support you.
Thanks,
Lars