I appreciate your getting back to us, cmjesquire.

I've read through your initial post and I'm here to help you out.

First, As for the error message, I'd recommend reaching out to out Phone Support team so this will be investigated. For you not to start from scratch, if you have the case number, you can give it to the agent so they will pull up your case.

Second, we'll have to turn on the time tracking feature to allow your employee to record their time worked. Let me guide you how:

1. From the Gear icon, select Account and settings.
2. Go to the Advanced tab.
3. Click the Edit (pencil) icon on the Time tracking section.
4. Toggle the Make Single-Time Activity Billable to Customer button.
5. Select the First day of work week.
6. Click Save and the Done.

Lastly, let's run some steps to isolate why the option to invite employee to QuickBooks Time is unavailable. 

To start with, open QuickBooks on a private window. It is where we can identify if the issues cause by browser-related concerns. I've added these keyboard keys to open one:

• Google Chrome: Ctrl + Shift + N
• Mozilla Firefox: Ctrl + Shift + P
• Microsoft Edge: Ctrl + Shift + P
• Safari: Command + Shift + N

If the option appears, you can go back to a regular browser and ensure to clear its cache. A piled cache can also be the reason for some unexpected page behavior.

We can also switch to a different supported-browser like Google Chrome, Mozilla Firefox, Safari, or Microsoft Edge.

Then, let's check to see if you can now invite your employee to use QuickBooks Time. I've added this screenshot as your visual guide:

For more information about time-tracking, you can check this reference: How to turn on and set up time tracking.

Get in touch with me if ever you need help. I've got your back!