Thanks for reaching out to us here in the Community. It's vital you're able to use the program without running into issues. Rest assured, I'll be happy to steer you in the right direction with this.
If you're still getting that error even after entering the correct date that's not in the future, I recommend troubleshooting this by clearing cache and cookies. Clearing cache and cookies is a great way to clean your browser, as it allows the browser to work more efficiently. Here's an article that shows you how to do that: How to clear cache and cookies. If this doesn't work, I suggest using a private/incognito window to see if that works instead. Try this out and let me know what happens. In case this issue persists, I encourage you to contact our support team so they can assist you further with this. Here are our contact details:
Schedule a Callback or start a Chat: click(?) in the upper right in QuickBooks Online > enter "Contact support" > choose Contact Us > provide a brief summary > select Let's Talk > choose Get a callbackor Start a Chat.