Thank you for reaching out. Can you please let me know what type of device you are using?
Also, are you able to see if there is an Update available for the App?
Thanks forgetting back to us, EmmaMarie.
I've reviewed our system and found out that this issue was already reported to our engineers. They're already investigating it and working for a fix.
Temporarily, you can use a mobile browser (Desktop mode) or a desktop browser. You can go to this link to log in to your account: https://qbo.intuit.com/.
We appreciate your patience as we get this working for you.