Hello Bill
You just need to login to your account, then go to
joomdonation.com/joomla-extensions/membe...ip-subscription.html
to purchase the extension again
When you need support, the support person can use your account to submit ticket. If not, he can use his account, but please ask him to provide us the email of the account which was used to purchase the product so that we can verify order before providing support
Hope my answers are clear. Please let us know if you have any questions
Regards,
Tuan