How do I connect multiple bank accounts to my quick books account?

Thank you for posting here in the Community, @contact-wilderno. I understand you're not able to connect a second account in QuickBooks. I have a few steps you can do to help you resolve this issue.

Let's rule out a possible browser cache issue. The browser uses cache and cookies to help load web pages faster the next time you visit a site. When this gets full, it causes issues that hinder the performance of your account. 

To verify this, I recommend accessing your QuickBooks Online (QBO) account via a private or incognito window. This is a great way of identifying browser issues as this doesn't save any data files. 

• Google Chrome: CTRL + Shift + N.
• Microsoft Edge: CTRL + Shift + N
• Mozilla Firefox: CTRL + Shift + P
• Safari (new versions): Command + Shift + N

If you’re able to access your banking page, I’d suggest clearing your regular browser's cache to refresh it. If the issue persists, I recommend using other supported browsers. This way, we can check if this is a browser-specific issue. 

Also, you can refer to the link attached for more details about fixing bank connection issues in QuickBooks Online: 

• Connect bank and credit card accounts to QuickBooks Online.
• Find your bank account when you connect to online banking.

I'm always here to answer your questions if you need more help managing your bank accounts in QuickBooks. I'm always here ready to lend a helping hand. Keep safe and have a good one!