Let's isolate this error for a possible browser-related, @tarnzen.
As an initial troubleshooting steps, let's start using a private browser. Then log into QuickBooks Online, and if you aren’t receiving error codes, then you’ll need to clear out your browser's cache.
Sometimes if the cache becomes too full of older data, it can cause viewing and performance errors within QuickBooks Online. Clearing it will force the system to refresh and get everything back to running smoothly.
The following link provides similar steps if you're using a different browser: Clear my browser cache and temporary Internet files.
Also, you can consider accessing your QuickBooks account using other compatible browsers. There are cases that some users can run their payroll on this.
Keep in touch with us if there's anything else you need. We're always here to help.