Welcome to Alfred Center!
We tried our best to make the feature work on as many devices as possible. However, there are still some technical difficulties we were not able to overcome.
The Zoom is not available on all devices and/or lens. In most cases, this happens because the resolution of the camera sensor is too low (for example, the front-facing lens on older models).
We took a look at your devices, and we found out your LG Camera does not support the Zoom-In feature because of the resolution limitation. However, you can try to set Alfred Camera on other devices to see if Zoom could work successfully.
In the meantime, our engineers are working hard to break the limitations and optimize the Zoom feature. Hopefully, Zoom will be available to more devices in next major update. Please continue to support Alfred and stay tuned.
Hope it helps! Please let me know if you need further assistance!