Hi Stiofan,
thank you for your replay and information.
How does it work on your site (https://wpinvoicing.com/downloads/membership/)
User can choose a favorit membership, pay for it and then he get access to special downloads, support questions etc. What happen in the backend? You get payment. Do you set his role / rights (for download, support questions) then per hand. And when the user cancels his payment do you set his role per hand again? Sorry, when I can´t really belive it 😉