Keep the conversation about Nucleus to here please, I don’t really want to pollute the forums with my plugin problems!
Also, please be patient if I’ve not responded, two hours isn’t that long to wait and I’m unfortunately not about during much of a weekday.
Can you clarify what you mean - maybe give a walkthrough of what you’re trying to do? Do you mean that players can’t use /seen and /invsee? By default, players can’t use these commands, only admins can.
The permissions for these commands are nucleus.invsee.base and nucleus.seen.base.