RE: where is Settings area gone from Dynamics 365 CE trials
Hi MMartyna,
I tested it in my trial environment and didn't have this problem.
- Here's how I found the Settings module:
In the Microsoft 365 admin center, choose Dynamics 365 from the left-side menu, you could access Dynamics 365 Administration Center. Then click the Open button for the trial instance to enter the trial instance.

We will see Settings > My Apps. Click on the app called Dynamic 365 - custom, this app has the Settings module.

Be careful not to enter "Dynamic 365 - custom" App by clicking on the sidebar. If you enter the App from the sidebar, the App is not the web client App, so it does not have Settings module.

Could you see Settings in this way?
- If not, please try this way:
Click the Settings button in the top right corner, then click Advanced Settings. This way we will go directly to the Settings module.

Hope this helps.
Best Regards,
Lu Hao