Subscription service

Haven’t been able to find anywhere how the subscription service actually works. would be helpful if that was clearly stated somewhere easy to find. I believe I can get new patches monthly, I see where they are on my accounts page and I download them but they are not showing. I discovered somewhere you have to be signed in to load them into vital.I assumed I was signed in but discovered I wasn’t. Had to reset my password and now vital won’t recognise the new password I just created. All very frustrating. Also now locked out due to unusual activity. help please