in luci if you go to System > Custom Commands...
if you see a box called 'docmd'.... enter this including the quotation marks... click run... the paste the output here...
"uci show nlbwmon"
use the "Preformatted text </>"
other than that... we'll probably have to wait for other users to confirm/articulate the issue clearer... ( worst case scenario... you have non-persistent nlbwmon for a while... which is how OpenWrt typically works anyway )