Allow me to chime in and help rectify the error received when connecting and importing credit card entries from Citibank, MattL.

In QuickBooks Desktop, error OLSU-1011 occurs when there are issues with your bank's servers. To help you fix this issue, I recommend following the steps provided by my colleagues above and ensure to secure a backup copy of your company file before performing them.

I'll also share this reference for additional guidance: Fix OL and OLSU Bank Feeds errors.

However, if the issue persists even after performing the steps on this thread, it's best to contact our Customer Care Team. They have the relevant tools to provide real-time assistance and may create an investigation ticket if necessary.

In the meantime, you can manually import the credit card transactions into your QuickBooks account so you can match them from your banking feeds.

Moreover, here's an article to help you handle and review your online bank entries: Learn the reconcile workflow in QuickBooks.

You can always get back to this forum if you require additional assistance or provide updates when troubleshooting the error in your account. I'll be around anytime to further help you. Keep safe.