How to install in new computer

Install the up-to-date stable version of the 1Password client ()currently 8.12.21) and any browser extensions on your new computer. Do not try to install old and unsupported software such as 1Password 7.

Before you do anything with this 1Password client, ensure that you have at least one other up-to-date 1Password client from which you can access your account and vaults. You should also have your Emergency Kit up-to-date and available.

There is plenty of good, authoritative, and up-to-date [There's an emerging theme here.] information on wiping storage on computers in order to prepare them for donation or recycling. In short, it always involves thoroughly wiping all disks, not just quickly reformatting or (re)installing a new OS. Physically destroying the disks is the most reliable method, which should be used for disposal, but can be wasteful in case of donation (though a newer disk can revitalise an old machine).

Hello @EB84280! 👋

Welcome to the community! To echo what AJCxZ0 said, make sure to install 1Password 8 on your new Mac, generate an Emergency Kit if you haven't already, and verify that you see all of your items there before you wipe the old Mac. 

If you're using an old standalone vault in 1Password 7 on your old Mac, then you'll need to migrate to a 1Password account first: Migrate your existing 1Password data from standalone vaults to a 1Password account

Once you see all of your items on your new Mac, you can follow Apple's guidance on how to prepare to recycle or trade-in your old Mac: What to do before you sell, give away, trade in, or recycle your Mac

I hope that helps. 

-Dave