Thanks for joining us in the Community again. It's vital you're able to connect your bank and sync your transactions without getting errors. Rest assured, I'll be happy to point you in the right direction so you can get back to doing what you love.
To get started, I'd like to troubleshoot this issue to determine if it's a browser-related issue. Clearing cache and cookies is a great way to clean your browser allowing it to work more efficiently. Here's an article that shows you how to do that: How to clear cache and cookies. Try this out and let me know what happens. I also recommend re-sending the invite again to see if that works. In case this issue persists, I encourage you to contact our support team so they can assist you further with this. Here are our contact details:
Schedule a Callback or start a Chat: click(?) in the upper right in QuickBooks Online > enter "Contact support" > choose Contact Us > provide a brief summary > select Let's Talk > choose Get a callbackor Start a Chat.