Hi there, @airewok.
There's an open investigation into this issue. Our engineering team is currently investigating this situation, and we're unable to provide a specific timeline on when this will be resolved.
I recommend giving our Customer Care Team a call to add your account details to the list of affected users. This way, you'll be updated as soon as a fix is implemented. Here's how:
- Click the Help icon located in the upper right-hand corner.
- In the Help window, click the Contact Us button located at the bottom.
- Enter your question and click Let's talk.
- Select Start messaging or Get a callback.
In the meantime, I'll share these workarounds that can help you log in to the mobile app.
First, make sure you're using the correct QuickBooks Online app, depending on what kind of device you have. Below is a link that can take you straight to the app you need: QuickBooks Online Mobile App
Next, log in on a browser to see if it's a mobile app issue or an account issue.
Then, let's uninstall and reinstall to help the app remove any error messages or glitches that may be standing in the way. Lastly, turn your device off and then back on.
In case you encounter other issues using the mobile app in the future, you can check the following articles below for resolution.
Please feel free to let me know how this work for you. We'll be right here to help you with your QBO app concerns.