AR detail rep set up years ago . the print command button alongside the settings button is gone report can not be printed out . Any ideas why

I'd be glad to help you print reports in QuickBooks, @mwoock.

We can perform some troubleshooting steps to fix this. There are times that the browser is full of frequently accessed pages, thus causing some unusual responses. Let's log in to your account using a private browser. This mode will not save any history, making it a great place to identify browser issues.

Access your QBO account in a private/incognito browser. You may use these shortcut keys that I've listed below:

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

Then, open the report to check if the print and settings icon is already showing. If it shows, go back to your regular browser and clear the cache to delete stored site data and improve the system performance. Also, you can use other supported browsers. It could be that the one you're currently working on has a temporary problem with QuickBooks. 

Additionally, I've added this resource to guide you more on how to manage reports in QuickBooks Online: Print, Email, and Export reports. 

Don't hesitate to let me know how it goes. You've got my back if you have any other QuickBooks-related concerns. Have a wonderful day.