Hello there, olgavolk.

Thanks for joining this thread. Let's get this sorted out.

Since you have credit card payments that is booked to the master credit card, you'll need to disconnect the sub accounts and make sure you are connecting the parent account for Online Banking.

Here's an article to know more about connecting accounts in QuickBooks Online (QBO): Connect the accounts to Online Banking.

Keep me posted on how it goes. I'm still here whenever you need help while working with Online Banking in QuickBooks.