Thank you for reaching out to the Community, I'll be happy to help you get your QuickBooks Online App working again.
Normally, if you're getting an error that the time has expired you should be able to just refresh the page and try again. If you continue to encounter this error message, clear cache and you'll be able to log in properly. For more information on clearing cache, click here.
Please remember, I'm always here for any other questions or concerns.