Thanks for joining us here in the thread, @GodzChlyd. Let me give you insights on where you can see the Plus New icon in QuickBooks Online (QBO).

QBO has many features that you may use for your business. The features will be visible when you click the Gear icon or the Plus New button. Here's a virtual reference on where to see the Plus New button in QBO:

If you still haven't been able to trace the Plus New button, I suggest performing browser troubleshooting steps to help you fix this issue. See the following keyboard shortcuts for suitable browsers to open a private window:

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

Check out this article for a detailed process on how to clear your cache: Clear cache and cookies to fix issues when using QuickBooks Online.

On the other hand, you may also visit this article as a guide on adding transactions to account register: Manually add transactions to account registers in QuickBooks Online.

You can reply to this thread for further questions about handling your business in QBO. I'm here to assist. Keep safe!