Pro activation link missing in menue

My Website runs actually updated with free Sydney Theme. I purchased Pro and got the key.
But there is no link for the activation Panel in the menue of the running Installation. How to solve this?

In the Forum I only found informations to reinstall the theme but do I loose my Content and settings when i delete the Theme?

Hello there,

Please follow this instruction. To enable the license key, go to Appearance > Theme License.