There is a simple solution for this if you don’t mind the manual work. What you can do is the following:
Create new pages, but give them a unique name, something like ‘alb-533igh’ and make sure the SEO url is the same. Then you can use this as the unique code users need to enter.
What you can then do is add an input box where users can enter their code, add a button with an onClick handler, and under the buttons’ code add the following code:
import wixLocation from 'wix-location'; // add this code to the top of your page
export function button1_click(event, $w) {
//add this code below the button
wixLocation.to("/${$w("#input1").value});
}
Good luck!
Tiaan