Are there any restrictions on modifying the username, password, login endpoint, and port? After making the changes, I logged out, and when I accessed the modified address, it returned a 404 error. 
Do you have any specific screenshots?
I reinstalled it 
. I’ll try again once I have a new device.
The reproduction result shows that access is impossible without disabling SSL. After logging in, enabling SSL will trigger a 404 error. Even if you then disable SSL using the command line, the access will still return a 404 error.
These two should not have any connection, as they are both independent logics.