I have purchased an upgrade but I still see my old version of Capture One
When you purchase an upgrade to shift from the current Capture One version to a newer one which has more features (for instance, moving from Capture One Express to Capture One Pro or from Capture One Pro 7 to Capture One Pro 8), you are asked for your old product key to validate the upgrade.
After purchasing the upgrade, Phase One will send you a NEW license code which you will use to activate a new version of Capture One.
At the same time, Phase One disables your old license code, so it will no longer work and appear in your License Management section on captureone.com
The new license still remains backward compatible so that you can activate an older version of Capture One. For instance, a Capture One Pro 10 license can still be used to activate Capture One Pro 7 should you need to continue with the old software.
If you are upgrading from Express to Pro, you do not need to download new software. Instead, open the license window in Capture One (on macOS, go to Capture One menu -> License; on Windows, go to Help -> License Information) and choose the option to Deactivate or Change Activation.
After relaunching Capture One, you can activate the product that you have already purchased with your new license.