When I try to connect my bank account it says it’s done then tries to return me to the Inuit account but says authentication failed input

Thank you for posting here in the Community, @usertdibben28.

May I know if this is your first time setting up online banking? If it’s a new connection, I recommend validating the credentials first on the financial institution’s website. 

Once verified, try connecting your bank account again to your QuickBooks Self-Employed (QBSE) account.

Here’s how:

1. Click the Gear icon at the top and choose Bank accounts. 
2. Enter your financial institution’s URL or name on the search box and see the results.
3. Click the Continue. Then, enter the sign-in info you use for your bank's website.
4. Select Connect securely.

If you still encountered the same error message, this unexpected behavior can be caused by too much cache. We'll perform some steps to fix it. To start with, open your account using an incognito window. It's the best spot to identify browser issues. 

These are the shortcut keys: 

• Google Chrome: press Ctrl + Shift + N 
• Mozilla Firefox: press Ctrl + Shift + P
• Safari: press Command + Shift + N

If you're able to connect your bank account, go back to the regular browser and clear the cache to refresh it. It's advisable to delete them periodically to avoid issues like this. 

Also, you can use a different browser to help us narrow the cause of this behavior.

Once your bank account is connected and downloads transactions, you can now review and categorize your transactions. You can create rules to speed up reviews on your data.

Please let me know how it goes. I want to ensure that this issue will get resolved. Have a nice day!