If you're a registered user, your MemberTies license entitles you to install all new releases until the expiry date of the license. This is typically one year from the date the license was issued or last renewed.
Each MemberTies release has an "Effective Date". If your license expired prior to this date, you will need to renew your license (at a discount). Once you renew, you'll receive a new license with a new expiry date.
To check the date for your license in MemberTies, choose License Info from the Home ribbon bar. On the License Info tab, check the "Valid Through" date. If the date has passed, you will need to purchase a license renewal.
Identifying the expiration date of a license.