A membership include...
Access to purchased Prestashop modules and new releases, support service. Feel free to download anytime through PrestaSOO.
No problem. The module is still working but will not be able to access new releases and support service.
Resell the modules?
No. Your purchased modules should be used on your sites.
Use a purchased module on a site. Use on another site - buy a new license.
No. That way you are able to purchase a renewal if you'd like to.
Limit the number of download
The maximum the number of download as your membership licenses allow.