I am trying to upload Plesk license key and getting the error:
You are trying to use a license key created for another product. Contact sales representatives to obtain the proper license key.
Your license key file is designed for different product, product version, or OS.
Make sure that you are trying to upload the correct key for your product.
Make sure that key is for the same operating system as on your server (Unix or Windows).
When you have the correct license key, upload it to your server. For instructions about license upload in Plesk, please visit KB #119763 .
If you are unable to locate the correct license key, please contact Licensing and Purchase Support .
If you purchased a license for Plesk 12 and get the above mentioned error, while trying to activate your Plesk installation, please make sure the version of Plesk matches the version of your license as described at KB #120657