Hi Nils,
License renewal details like renewal date and pricing are tied to your commercial agreement and therefore aren’t typically available as a generic forum answer.
The best point of contact is your Customer Success Manager (CSM).
Please contact your CSM for the exact information.
According to the Mendix documentation below, app plans and billing are managed through the Developer Portal, and for questions related to renewal details or pricing, it is recommended to contact Mendix Support.