Can you be more specific?
We can do some troubleshooting to get QuickBooks working again.
Let's start by opening your account using the incognito or private browser.
Here are the keyboard shortcuts:
Then, check if it's working. If not, we can proceed in clearing out your browser's cache. This helps resolve browser issues such as crashing, bringing up websites or logging in.
Once done, close the browser entirely and try to log in again.
Let me know if you have any additional questions. Thanks.