Can’t get it to do anything
Response from developer
https://www.dctsystems.co.uk/x-air-guitar There are multiple video tutorials here.

Control your X-Air amp simulator settings and switch channels remotely from your iPhone or iPad. Supports Bluetooth pedals for hands-free operation, making it ideal for travel or guest musicians.
1.1
May 10, 2025
Prevent sleep when the app is in use. Reduce click when switching channels.
https://www.dctsystems.co.uk/x-air-guitar There are multiple video tutorials here.
X Air-Guitar is an application that allows you to control the amp simulator and switch channels on your X-Air series mixers remotely from your iPhone or iPad.
The description does not specify offline functionality, but remote control typically requires a connection to the mixer. It is designed for use with your X-Air mixer.
X Air-Guitar supports Bluetooth pedals such as the M-Vave Chocolate, Airturn, or PageFlip pedals for hands-free channel switching.
X Air-Guitar is a paid application, priced at $5.99. There are no in-app purchases or subscriptions mentioned.
X Air-Guitar is supported on iPhone, iPad, and iPod devices. It was last updated on May 10, 2025, with version 1.1.
No, the app explicitly states it is not affiliated with Behringer in any way. It is developed by DCTSystems.
X Air-Guitar has an age rating of 4+, making it suitable for a wide range of users.
No, X Air-Guitar does not contain advertisements. It is a paid application without any ad support.