Solved Permissions not working (wrong usage)

Hello fellow Rust players!

I've just updated a small server i'm working on (having it for friends for testing stuff out) to the latest Rust update and updated Oxide, and now i've came across a problem. All the plugins are working, but i somehow can't add myself to the owner rank. It worked perfectly before i updated everything, but now it just kind of stopped working all of a sudden. What i did is, i typed this command in the web console: "oxide.grant user CrazyClash oxide.*" and added the ownerid into the users.cfg file, restarted the server and i can't do anything except noclip. Can't use any of the commands like /god or /vanish that i should've gotten from the plugins and can't spawn anything in within the F1 menu. Whenever i try to spawn in something from the F1 menu, it comes up with a massage "You are missing the necessary permission to do that!" and so i'm very lost now. All of it worked perfectly before the updates.
If i should do a complete restall of the server to hopefully fix it, i wouldn't like to lose what's already built on the map and what people already have in their inventories. So if a reinstall of the server is the only way to get rid of the problem, i would appreciate if i could also get some help which files to save before doing that.
And sorry if this post is all around the place, i'm not from an English speaking country so it can get a bit messy. Thank you for understanding.

If any of you can help me, i would highly appreciate it!
Thank you all already in advance and have a wonderful day!

 

Thank you very much for the quick reply, @Wulf

I just tried doing both of the tutorials, and for some reason i still get the same results. In the webconsole when i'm logging into the server, it says i have an auth level of 2, which i believe is the highest one, yet sadly i still have no permission to do either the commands or spawn anything in from the F1 menu. If you by any chances know what might be causing it, i would very much appreciate it!

Have a wonderful day and thank you again!

 

Thank you once again!

I've just tested it with the Godmode plugin, it started working for me when i typed this into the console: "oxide.grant user CrazyClash godmode.toggle" and i was wondering, shouldn't this command also work, and just grant you every command from every plugin? - "oxide.grant user CrazyClash oxide.*"

It did so before the update, but now whenever i put it into the console, nothing seems to happen, so i have to grant every single command manualy now?

Have a wonderful day and once again, thank you!

 

Okay thank you a ton!

I get it now! Thank you for the explanation. I was just a bit confused because before i updated, i only had to put in the oxide.* and i was able to use every command.

I have to say, you give out the quickest and probably the most efficient "help" replies i have ever came across, so big props for that! Thank you once again!