Universal VIP donation management (paid $$$)

Hi, iam currently hosting a new server called Rugged Rust, i have set up VIP kits and a website DawnOfRust but with every purchase of the VIP kits i have to manually give out permissions to every player, which can be very frustrating esepically when it comes to having to be on every night all night.
Now i do not have the skill set to make a Automatic Vip activation system, what i mean by that is when a player goes to my webpage and purchases a kit of their desire it will register in Rust and automatially grant them access to the kit they have purchased and revoke access when the kit has been redeemed. As a student i can not keep up with manually doing it, it is just too much work. The Sdonate system looks good but as i said iam not good with setting something so big up...
Please get but to me ASAP so i can keep my VIP kits in the server

 

DonationClaim | Oxide

 

I use this. It cost $15 initially but that's it and they even host your store for free SDonate Donation System for Rust | Oxide

 

Same I use SDonate

 

So hard to get this to work.
Followed the whole overview and still, cant get it to work.