Hi account-grey-gre,
Let me help you check the unexpected behavior encountered in QuickBooks Online so you can get back to running your business.
Have you tried using a private browser? If not, I recommend using that first. The private browser/incognito window does not save your browsing history making it a good place to check for website data issues.
To isolate unexpected behaviors, let's start by using an incognito/private browser. Here's how:
Google Chrome: press Ctrl + Shift + N
Mozilla Firefox: press Ctrl + Shift + P
Safari: press Command + Shift + N
Then, let's access QBO once more. If it went through fine using a private browser, I'd recommend clearing your browser's cache.
Let me know how it went! You can drop a comment below and I'll be sure to respond to you.