I always check that box that says auto log me in each time I visit the site but I have to log in each time.

The reason you're getting logged out is because your IP Address is changing often, at least based on your recent activity.

You can resolve this issue by navigating to the Account Security tab in the forum Control Panel, and setting the "Restrict auto logins to IP" option to "No".

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"Everyone is entitled to their own opinions, but they're not entitled to their own facts."