Updating and using 1Password

I am having some issues where I will click in the password blank on a website, and in the past 1Password has done a great job of filling in the user ID and the password. But now if I click in either the user ID or the password 1Password is not entering the data --I can go into 1Password and copy the user ID and copy the password and import those but that's a big change from what it used to be. So I thought it was a problem that I needed to upgrade or improve my 1Password. So I tried to do that on my Mac running 24.3 and there was no way that I could see to upgrade 1password. so I deleted 1Password and I went into the Mac App Store and downloaded it but it says 1Password 7 and I don't think seven is the latest. And it doesn't look anything like my old 1Password app. It does work, but it does have the same old problem that I had before. So I've been trying to find out how to upgrade my 1Password to the latest because I have a paid account and I can't find any way of doing that either.

And the browser extension isn't quite working either, but that may be because I still have 1Password 7 and I'm not sure if that's the one that works best anyway.