aaP_hunter-38
Resetting the panel does not modify these files. If it is to change back to English, ask them to reverse the order and execute the command again
Try this:
mv -v /www/server/panel/config/"menu.json" /www/server/panel/config/"menu.json_2022_08_05"
mv -v /www/server/panel/config/"menu.json_bak" /www/server/panel/config/"menu.json"
sed -i 's/Russian/English/g' /www/server/panel/config/config.json
sed -i '/{"name":"Russian","title":"Russian"}/a {"name":"English","title":"English"}' /www/server/panel/BTPanel/static/language/list.json
bt restart