I bought a standalone CD for Lightroom 5 a while back and downloaded it onto my computer, then got a new computer. On my new computer, Lightroom somehow ended up as Creative Cloud, and it says I have to renew my membership to use the Develop Module. However, I don't want Creative Cloud. Is there a way I can get off of Creative Cloud and just put in the serial number from the CD to reactivate Lightroom without having to redownload it and lose all of my photos?
You have to download the standalone LR 5 from Product updates
Install it, put in your serial number and you're ready to go. You will not lose any of your photos.
You will have to cancel your CC subscription.