Hello! I have been using Discord personally and as a developer for 3 years. What's more, I'm from the US as well so you know we will be able to communicate quickly and effectively :) Also, since I'm relatively new to this site, I am still willing to do projects quite cheaply.
I can do this project for you using the Python programming language and its Discord API. If you need a host in order to run it 24/7, I can recommend you one OR host it myself for you for very cheap (we can discuss all that later). Otherwise, I can make it easily runnable and configurable to your specifications.
Examples of my previous work are making a 2048 Game Discord bot, a lyric file reader bot, chatbots with commands, etc.
Send me a chat message so we can talk about how the website will know what the user's Discord ID is (is it in a database already or do they have to put it in?). Thanks!