How to prevent Shinyapp.io to change URL every time we republish

I typically publish my app the standard way:

The first time I publish, I get this URL:

 https://peveralldubois.shinyapps.io/myapp/

But the second and third time I republish I get this:

https://peveralldubois.shinyapps.io/myapp2/
https://peveralldubois.shinyapps.io/myapp3/

This happen, even after I delete the app in Shinyapp.io dashboard or Create New Titlein RStudio.

How can I prevent it so that it permanently use?

https://peveralldubois.shinyapps.io/myapp/