I'd like to know more about this, though. What quarterly form are you referring to? This way, I can check our records for any open investigations.
In the meantime, we can perform some basic steps to resolve this unexpected behavior. Let's start with logging into the account through an incognito window. It's the best place to identify web issues. These are the shortcut keys:
Google Chrome: press Ctrl + Shift + N
Mozilla Firefox: press Ctrl + Shift + P
Safari: press Command + Shift + N
If you're able to generate the form without any issues, go back to the regular browser, then clear the cache to refresh it. It's advisable to delete them periodically to prevent and fix unexpected behaviors.
Also, you can use a different browser to help us narrow the cause of this behavior.