When viewing my invoices they no longer show the details of when the customer viewed it, how do I turn that back on?

Hello naomi2, waterlab.

Thank you for reaching out to the Community. It would be my pleasure to help you get to the bottom of this strange behavior happening with the Invoice Activities section.

I've checked here in the system and haven't found any open investigation concerning the missing Activities section within the invoice. For now, let's try to perform basic troubleshooting to isolate the issue.

We can star with logging into your account through a private browser. I'm adding the shortcut keys below depending on the browser you're using:

• Google Chrome: press Ctrl + Shift + N  
• Mozilla Firefox: press Ctrl + Shift + P
• Internet Explorer: press Ctrl + Shift + P
• Safari: press Command + Shift + N

If this works, we can go back to your regular browser and clear its cache. In case private browsing fails, you can also try switching to a different supported browser. I need to know if the cause of the issue is browser related.

Please let me know how this goes. I'll be on a lookout for your response anytime you need further assistance.