Hi Christophe
We don't have any plan to support that payment gateway in the future, so if you decide to use Membership Pro, you will need to find a developer to develop the payment plugin for you. It is not an easy task, usually, it will take a dev from 5 to 10 days for the development and might cost you 180$+.
So please think about it carefully before making the decision
Regards,
Tuan