be theme - deregister

Good morning. I bought a Be-theme which I initially activated on a Local version of the website. I then migrated the site from local to online. Now that I have done the update of the theme it asks me to activate the activation code. I put in but it tells me that it is still active on the local version.
I went back to the local version and deregister. After that I went back to the online version to put the code back but still keeps telling me that the code is active on another version of the site. How do I go about making the code free?

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