I have some problems with the Firebase hosting.
I connected my custom domain in firebase and everything worked correctly, the application accessed correctly. It was not until later when doing the test on another computer (with the client), that my connection was not secure and I broke the https ... it turns out that I later tried it again and accessed it correctly, but that's not all because apparently it works intermittently, sometimes it comes in and in others it tells me that my connection is not private.
The question is: Do you know why this is happening that sometimes does not allow me to access saying that the connection is not secure?