I’ll try to explain what I need as best I can but if you have any questions, please don’t hesitate to ask and I’ll do my best to elaborate further.
I need a program that does the following:
A visitor comes to a page on site X.
The visitor is asked for a code (which has been specified or generated from the admin panel)
upon entering their code, they’re taken to a corresponding page on Site Y (specified in the admin panel)
If they enter the wrong code, they’re notified they entered an invalid code.
I’d prefer this to be implemented as a plugin in WordPress so it’s easy to manage and use with an admin panel accessible through the WordPress admin panel.
Again, if you have any questions, please let me know.