Why am I getting a connection timed out?
ERR_CONNECTION_TIMED_OUT, also called the timeout error, means a website took too long to respond to the browser's request. Generally, a site can establish communication with a computer within 30 seconds. If it takes longer than that, the browsing application will terminate the connection.
How do I fix secure connection in Firefox?
The easiest way to fix this secure connection error is to reset the Firefox settings. If that doesn't work, disable DNS over HTTPS or create a new Firefox profile. Disable the VPN client or proxy service. Your VPN and proxy service can interfere with the connection.