Polk Soundbar volume reacts but does not adjust

I've been using my Polk Soundbar for about a year with no issue. Last night when I adjusted the volume it appears to react (lights on bar show volume change) but the volume doesn't actually adjust. Funny enough if I mute and unmute the volume will come on at the proper adjusted volume. Any ideas on how to fix this issue so the volume will adjust appropriately?

Thanks

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