At the end of the trial period, if you want to continue the use of the add-in, you have to subscribe by clicking on Subscribe Now.
You will redirected to the Paypal website to finalize the payment.
During the payment process, please indicate the email of the user that intends to login to Revit.
The suscription will be automatically renewed according to the chosen periodicity (monthly or annualy).
Stopping the automatic susbscription can be done by accessing on the app store. These step can be done only if a Paypal account has been used for subscription.
If you need help, please contact our support.