How to validate the Cpt 2019 version ?

...

Hello !...

I had a monthly subscription for Cpt 2017, which is still active.

But I downloaded the Cpt 2019 version, and used it for a few days now.

But this morning, I received a mail from Adobe saying that I used Cpt 2019 in a trial version ??... (And that I only have 15 days left...)

Vous êtes à la moitié de votre PÉRIODE d'essai d'Adobe Captivate (2019 release) !

What do I have to do, to validate the 2019 version definitively ?

(I don't want to lose my work !!...)

Thx

...