volume control for terrestrial

T3 Firmware :v1.4.62 MYTVONLINE2 version: 7.7.1 March 23, 2020 update If I select terrestrial as my connection choice, I am unable to effect the volume of the box with the slider or the vol up/down keys. The volume slider and numbers will move but it has no effect on the actual volume It will go to mute if I take the slide bar to zero or select mute. Otherwise it is always at full volume. I am able to scan and select channels but can not change the volume of any selected channel. Volume controls work normally and correctly if I select an IPTV (portal or playlist) choice instead of the Terrestrial option. I upgraded to the 05/21 release with the same problem. Am I doing something wrong or is it a bug in the Mytvonline2 software?