Volume of some channels starts from 0 and not from 100

Hello Friends!! Can you help me? My zgemma 9 twin with Open ATV 6.4 for several days the volume of some channels starts from 0 and not from 100. How can it be reset and all channels have a volume increase of 100.? When I change some channels, the sound starts from 0 and on other channels it is 100. Where there is a setting for all channels to be 100 ?I looked in all the settings but there is no such option. I want all channels to increase the volume to 100.

REGARDS

Quote from KiddaC

openatv comes with volume adjust plugin pre-installed. There might be channels in there that have been adjusted.
Look in plugin menu. Remove plugins > Extensions (or maybe systemplugins)

Uninstall volume adjust plugin.

THANK YOU FRIEND!!! It is in extensions and after I deleted it and restarted the receiver everything is fine with the volume !