IIS Stops after some hours

Worker application in IIS 10 stops after some hours of inactivity as you can see in the image.

I am almost certain I have to Install **Applicaton Initialization ** module, right?
And then restart the Worker and website.
But, do I have to change my code inside the app or somewhere else?

Thanks in advance

I have set up these settings:

IIS – Your App Pool – Start Mode – Always Running
IIS – Your App Pool – Idle Time-out – 0
IIS – Your App – Advanced Settings – Preload Enabled – True

Currently I did not

Install Application Initialization Module (IIS)

and did not update my Blazor app code or elsewhere