Tried Parallels 13 from 12 version

Serge4

Bit poster
Hi all,
I've tried the new version of parallels desktop 13 onto my old licensed 12 Version.
Now, I'm not able to use none of them.
The system ask me to upgrade to the paid version and nothing else.
What can I do in order to retrieve the licensed version?
Thanks in advance.
 
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