The app is deprecated. Please use the Camera Tools app (click here for download links) instead. The Camera Tools app supports GoPro Hero 5 and newer models (e.g. Hero 5/6/7/8/9, GoPro Fusion/Max 360°).
The GoPro Hero 8 and GoPro Max 360° cameras require a special pairing process for activating their WiFi adapter. This is where the WiFi Connector for Hero 8 app steps in. The app pairs your device with the GoPro over Bluetooth and enables camera's WiFi network.
Features:
You can find detailed instructions here.