re-install Creative Suite 5.5 - Production Premium

Creative Suite 1, 2, 3 are officially dead.  The activation servers are gone forever. 

Creative Suite 4, 5, 6 are on life support.  Adobe removed downloads to the legacy Creative Suite installers.  If you still have your original media (disks or downloads), a legitimate serial number and an older operating system, it's likely that you can install and activate legacy CS products.  Failing that however,  it's time to get modern software. 

NOTE:  Creative Suite installers don't work on Sierra, High Sierra or Mojave without terminal workarounds. 

https://helpx.adobe.com/creative-cloud/kb/install-creative-suite-mac-os-sierra.html

Creative Suite cannot be installed on Catalina which does not support older 32-bit apps. 

OPTIONS:
Photoshop or Premier Elements 2020 (approx $100, no subscription needed)
https://www.adobe.com/products/photoshop-elements.html

Creative Cloud Photography Plan (approx $10/month for 1 year subscription)
https://www.adobe.com/creativecloud/photography.html

Creative Cloud All Apps Plan
https://www.adobe.com/creativecloud/plans.html

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Beware of fake Adobe reps who may contact you privately offering to sell you software or take control of your computer. It's a scam, run away!  Creative Suite is not sold by any legitimate vendors in any country.

The process below USED to work (until April 14) if you bought a download direct from Adobe... an employee is trying to find out why this process no longer works, so IF you bought a download direct from Adobe, check back every day to see if the process starts working again
.
For CS6 back to CS4 you may download ONLY if you bought direct from Adobe via download
-Log-in to your account and click this link https://account.adobe.com/products
--click Order history on the left and then the link to your order that will show on the right
--and finally click the link "Downloads and serial numbers" that will appear
--as always, write the serial number in a text file AND copy that text file and the
---download file(s) to an external drive (or two) to be sure you have what you need
-if you did not buy direct from Adobe via download you must find your original install
--if you have an Education or volume license you MUST use your original media
--the link for an Education or volume license download is not available at all
-if you bought a disc and don't have a drive you will need to buy an external USB drive
-if you bought a download from a 3rd party vendor you will need to contact that vendor