Why can I give an OP without surgery?

I wanted to test the new ranks on my server, and noticed that I can only give myself OP without a single op. Here the rank:

Thank you in advance.

Premium:

permissions:

- togglefly.fly

- minecraft.command.weather

- minecraft.command.time

- modifyworld.

- essentials.spawn

- essentials.spawn

- essentials.sethome

- essentials.home

- essentials.tpa

- essentials.tpaccept

- essentials.tpdeny

- essentials.balance

- essentials.balancetop

- essentials.afk

- essentials.afk.auto

- essentials.pay

- essentials.help

- essentials.mail

- essentials.mail.send

- essentials.msg

- essentials.warps.A

- essentials.warp

- esentials.warps.list

- essentials.signs.use.buy

- essentials.signs.use.sell

- essentials.list

- essentials.helpop

- essentials.chat.shout

- use.signature

- essentials.build

- p.use.

inheritance: []

build: true

chat:

prefix: '[& ePremium]'

suffix: ''

chatColor: '& a'

nameColor: '& e'

level:

promote: 'Supporter'

demote: 'Player'

Level:

promote: 'Supporter'

demote: 'Player'

remove all or nothing or helpful fractions.

it may be because if sup op can. But I think the problem is elsewhere. What is the use of permissionex bpermission or something?

Ne Sup has no op

I use PowerRanks

https://dev.bukkit.org/...powerranks

That's exactly how it works with / sign etc.

No idea. P.usw. Why a point in the end, otherwise sorry