Greetings!
It is probably the first time ever I started working with plugins and trying to edit/modify them and I already have a small problem.
How/where do I enable the experimental, dynamic size and how do i grant someone admin-perms. (I may add, that I added myself as an owner/Admin in the configfiles. But it seems like this isnt enough/correct because the plugins admin commands dont work)
I am probably just blind but... I guess it can't hurt to ask for help.

*Edit. It seems like I fixed the Admin issue. Now I can type in the commands into console with out getting the notification not having the perms. The issue of not being able to adjust the backpacksizes remains for now.