Thank you for posting, @VeroRo.
I appreciate your usage of our services, and I understand you want to change your plan to one that includes Acrobat AI Assistant and Acrobat. Is that correct?
If so, then see https://helpx.adobe.com/account/individual/subscriptions-and-plans/plan-changes-and-upgrades/change-adobe-plan.html to explore the options that are available to you.
If you don’t find a plan that meets your needs, then please don’t hesitate to contact us directly at https://helpx.adobe.com/contact.html?rghtup=autoOpen, as suggested by @Peru Bob.
Please update this public discussion thread if you have any additional questions.