I also stick with CS6 because I don't like subscription. If I download from this link, do I need to purchase a serial number?
not.
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No serial number is required to install or launch a Creative Suite 6 app. Instead, go to the Adobe accounts page and sign in with your Adobe ID and password.
If you have a redemption code, go to Redeem your purchase. Sign in with your Adobe ID and password, enter your redemption code, follow the onscreen instructions, and install your product.
If you’re installing from disks, enter your Adobe ID when the installer prompts you. (If you began installing before you redeemed your code, cancel, redeem your code, and start again.)
If you lost your serial number, or your product is not listed in your account, contact us.
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