My tasks have disappeared on 'get things done' and have been replaced with 'quick actions'. How do I get to my tasks now?

Hello Exton_9, thanks for posting on the Community Page, 

Use the From QuickBooks switch

The From QuickBooks switch only appears in the grid view. When enabled, it shows tasks you may need to complete based on the info in your client's QuickBooks company. It shows you a tile when your clients have any of the following:

• Upcoming payroll that needs to be run
• Bank transactions that need to be categorised

These tiles behave differently from projects or requests. They disappear when completed.

This article has more information for you to look at.