tried to add a temp lite sniper today, wouldnt work, i then tried to add a full litesniper again, didnt work - i am unsure if this is the same for addsniper/snipertemp, a diagnostic will have to be done. it could just be the server not responding to the commands correctly or it might be a case of the plugin not responding.

Can i atleast know what command it is?

As Mike said. There are no commands anymore. There are only permission nodes.

okay, so how do i promote someone then?

You can't.
You shouldn't even give someone litesniper without giving them the litesniper group.
Now you have to ask someone with access to group management to give them the group and they gain litesniper after that.

okay, so who has access to group management and knows how to use it?

Admins.

and they know how to use it? because from what i found, when i asked in game, none of them did. otherwise i wouldnt have posted here.

At least they can use it. I'm not sure if everyone knows how to use it. But
/pex user -name- group add -group-name-
should do it. (Replace -name- and -group-name- with the player's name and the lite sniper group name.)

oh okay, so its pex, thank you for answering my original question

Those commands are no longer available, since we moved to a permission based system.
Litesniper and Sniper can only be granted by either giving the specific permission node or the group that has this permission node.