Quero um estorno - I want a chargeback

Já entrei em contato com apple, comprei o app midi guitar e o mesmo não funciona corretamente no meu ipad, não estou conseguindo usar o midi externo, o app está icapacitado de me dar o que preciso, por favor preciso de ajuda, resolvam isso imediatamente.

I already contacted apple, I bought the midi guitar app and it doesn’t work correctly on my ipad, I can’t use the external midi, the app is unable to give me what I need, please need help, fix it immediately .

watch this video how to switch on the external midi output:

more help is on:
https://www.jamorigin.com/docs/midi-guitar-for-ios/

I bought MIDI Guitar Rig and when I use the garageband after a few seconds the sound mutes

when you use MIDI Guitar’s virtual midi output with external apps, you also need the “MIDI Output” IAP.

You can reverse me the value for me to buy the “MIDI Output” IAP. ?

you need both IAP’s for midi output. “guitar rig” is the entrance level.