If I click on NEW PAY RUN tab it will not open into create new pay run

Thanks for posting in the Community, yourareaplumbing.

Let's check your browser's settings making sure you've turned off third-party cookies to allow the Employees tab to connect successfully in QuickBooks Online. Here's how:

For Google Chrome:

1. Select the 3 vertical dots in the top right hand corner
2. Select Settings then Advance
3. Under Privacy and Security select Content Settings
4. Select Cookies and turn off  Block third-party cookies

For Safari:
 

1. Select the Gear Icon in the top right hand corner
2. Select Preferences  then Privacy
3. Next, to Block Cookies tick Never

Once done, close your browser and log back in to your QuickBooks Online account and create a new pay run once more.

Let me know how it goes on your end. I'm just around to help you.