Making me buy 1P 6??

@LT2 - What version were you using before you upgraded? Upgrades from version 4 to 5 to 6 were all free to registered users, but there was a payment required to upgrade from version 3. If you have a paid license for version 4 or higher, you should definitely not need to buy anything to upgrade to version 6.

If your license is for version 3 or earlier, you may want to know that version 3 does not work well with the most recent version of OS X, 10.11.3 (El Capitan). If that is your operating system, your won't be happy if you revert to version 3. Also, be sure your upgrade came from the same source as where you purchased 1Password originally. If you do have version 3, it would have been from the AgileBits web store, but if you have version 4 or later, it could have come from AgileBits web store or from Apple through the Mac App Store.

Give a bit more information about your current 1Password license and your operating system version. Then we can point you to the best solution for your case.

@LT2 - In that case, go to the main 1Password support site and scroll down to near the bottom. Enter the email you used to buy your license, which will get your license file resent to you. (Or you may have the required license in 1Password in the Software License category.) While 1Password is open, click on the link provided to install your license. You should then be registered. Or, if you already have that license file, you can drag the file out of 1Password to your desktop, then go to the 1Password 6 menu and select Licenses. Navigate to that file, highlight it, and click Open. You definitely do not need to buy another license.

The reason you are being asked to pay again is that your new copy of version 6 hasn't had that license applied yet. Your version 4 license is 100% identical to the file for version 6.