Welcome to the magix.info user forums. So there are no Magix staff here.
The title of your post mentions Sequoia but you then ask about Samplitude (Pro) X8 Suite. Which software do you have? If it is Sequoia I would recommend you register at and repost any questions to the dedicated Sequoia forum here.
You may need to send an email to infoservice@magix.net for a definitive answer to your question about subscriptions.