Shiny application doesn't start for some users.

Hello everyone,

I've deployed my application online and I am tracking my users both with Google Analytics and Hotjar (more specifically, through the recordings of the users action on my webpage). For a small number of users, the application doesn't even start. In fact, from the recordings I can actually see that the user connect to the platform and there is immediately the grey screen, but without the reload button in the bottom-left of the screen. Moreover, there is no error displayed in my logs.

In order to understand if this is a problem related to my application settings, here there's a screenshot of my settings page taken from

Thanks in advance!