why do I have to sign it every time I use firefox

Hi Ernie, if you want Firefox to stay signed in to your Mozilla account, or if you want a website to stay signed in, usually that is automatic. If you set Firefox to delete cookies when it closes, then the "proof" that you signed into the site is deleted and you'll have to sign in again.

I'm not sure whether that is where you were going with your question. Please feel free to follow up here on the forum with some more details.