I bought a Vegas pro license, and I didn't get sent a key or anything.
Solved: Apparently the website was broken or something but now when I pay it says Thank you and says that it will send an email.
Probably blocked by your mailbox as spam.
This is a peer forum. What you have described is 100% unimaginable unless you gave your money to someone other than Magix. Official support link is at the top of this page, and good luck!
Probably got eaten by your spam folder. Log into your magix account, your serial number is in there under "my products". Also, abide by the forum rules or your post (and membership to this forum) will be removed.
Solved: Apparently the website was broken or something but now when I pay it says Thank you and says that it will send an email.
Good to hear, and welcome to VEGAS 19, we hope you like it. If there's any other issues, we're here to help. All we ask is that you keep the language chill, understand we're just fellow users trying to help out.