Changing your password is a good start to resolve this problem, monlicious-bakin.
I can provide another troubleshooting steps that can fix this issue. Let's start by opening a browser and log into QuickBooks Online to check it's working fine. Since QuickBooks app for Windows & Mac shares the same credentials with QBO, this process will help us isolate the issue.
If it's working fine, we can go back to your QuickBooks app and perform a reset app date to delete the junk files. Here's how:
Click the Help menu at the top of the screen.
Select the Reset App Data option from the drop-down menu.
If the same thing happens, I recommend connecting with our technical supports. This way, they can pull up your account in a secure session and run a series of tests to fix this issue.
Here's to get in touch with us:
Click the Help icon.
Click Contact Us.
In the description, enter "I can't log in."
Hit Let's talk.
Select Starta chat.
If you have any other concerns or questions, please let me know by leaving a comment below. I'll get back to help as quickly as I can.
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