Volume (Remote Control) Not Working With External Speaker

I have a Samsung FreeStyle projector that previously worked without any issues, allowing me to control the volume using the remote. The remote would accurately adjust the sound levels, providing a convenient way to manage audio output. This setup was ideal, as it allowed me to make quick changes without needing to physically interact with the projector or speaker.

However, I've encountered a problem recently. Now, I can only control the volume directly from the speaker itself; the remote still shows that the volume is increasing or decreasing, but there is no actual change in the audio levels.