Touch Tone Remote trouble shooting.
For instructions for basic use, see Touch Tone Remote.
Ensure that the battery or batteries in the remote are fresh.
Ensure that the LED illuminates when a button is pressed. If your remote has fresh batteries and the LED does not light up, the remote may not be functioning properly.
Ensure that the app is authorized to use the microphone in the device's privacy settings.
You can check the privacy settings by going to Settings App>Privacy. Enable the use of the microphone for the app.
You can verify that the touch tone remote is operational by recording and playing back its output.
Exit the app, quit the app from running in the background, relaunch the app.
Sometimes restarting the device will solve some problems.
Delete the app and reinstall it from the App Store.