we have the Ivie CP-884B podium box. The height buttons work fine, but the volume buttons do not effect the sound at all. The power button does still work and we use that to turn the sound on and off. We just can’t control the volume.
Have your PFR submit a FIR request. (Sorry for all the acronyms - many are explained HERE.) That's the best way for your FM group to be notified of a problem.
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Depending on your calling, you can submit a FIR request directly. The list of callings that has access can be found here. Taking a quick look, it seems to include the ward council level of ward leadership.
Have you searched the Help Center? Try doing a Google search and adding "site:churchofjesuschrist.org/help" to the search criteria.
So we can better help you, please edit your Profile to include your general location.