I am using rust admin tool on pc but its not working properly. Just tested with unaotorized account with authlevel 2 and was not banned automaticly when Enabled this security options in the Anticheat tab. Ideas how to fix this?

Create custom plugin for that. I dont think anyone updating Rust Admin anymore

Since Oxide.org moved over to Umod there has been no support or workable link to Rustadmin support, The only link you have is one that takes you back to Oxide page where the support link is dead.
We just have to wait till the developer for this tool gets interested in it again and updates it,
a few more things that dont work are the "give" function and the "teleport" function.
But apart from that all the other functions are still working on mine.

I can teleport to players via rust admin and its working properly but i am trying to avoid this as much as possible. if they have problem 99% of the time ask for sleeping bag 1st. Give also not important because do not give anything! Used console -> giveall to give x1 halloween 2018 campfire and thats all. Kill feed glitched sometimes and because were spam too just removed it. Now i am using only airdrop and heli, also login messages. No cargoship or ch_47 support but before month got update i tihnk. if you can give me better RCON and you know something i will appreciate it, but for now only found rust admin. On mobile use one good app and paid for it... supported devs and its no longer in playstore... what the hell is going on with all good rcons. :D