To add an image to the media library from the app on an iOS device, tap the camera icon then tap the drop-down between Cancel and Done in the blue part at the top. That will let you select and add an image from your device.
To add an image to the media library from the app on an iOS device, tap the camera icon then tap the drop-down between Cancel and Done in the blue part at the top. That will let you select and add an image from your device.