Hi jordan-walkercoc,
Congrats on signing up for QuickBooks. It's important you're able to log in and enjoy the amazing benefits of QuickBooks. Don't worry, I'll be happy to steer you in the right direction so you can continue doing what you love the most.
Based on what you've described, I recommend logging into your QuickBooks Online account using a private/incognito window on a web browser. If you're still getting the message you've described above, please send me a full screenshot with the URL showing. Since this is a public platform, I recommend covering any personal info that may appear on the screenshot.
Give this a try and let me know how you make out in the comments below. I'll be on standby.