How do I subscribe a product?

In order to subscribe to a XS2A API product you need to have an acccount and have completed the registraton process. You can then log in, go to product catalogue and click on more information.  Click on subscriptions and follow the process. Bear in mind that you need to subscribe each product individually.

How do I know that I am using the last API version ?

The bank will take care via the bank community manager and API product owner of the availability of the API products. The publication of new version or any update in general will be officialy communicated via the newsletter and the news feed feature of the developer portal. 

Who can I contact in case of issue with keys?

The best way to solve an issue on key management and rights management is to contact the bank via the "contact feature". Please identify yourself properly in the contact form, as well as the reason for contacting so that the message can be forwarded to the right addressee.