Hi Sydney, no problem. If you want, you can email support@ninjabee.com for help with things.
If you've purchased the game on itch.io, you'll have access to download a text file that has a license key in it. (at the top of this page, you should see something like "You own this game" and a download button). You also should have gotten an email with a link to the downloads page for this game. If not, let me know through support@ninjabee.com.
You can grab the name and key from the license key text file and enter them in the game to unlock the full version.