If you have an outstanding balance, all paid services on your account will be removed after the 4 Dunning periods. You can continue to use the free service without any restrictions and we will not remove any of your content.
You can reactivate your issuu services by (re)entering your billing address and a valid payment method in your Billing Settings.
issuu will then charge you the outstanding balance and reactivate your services immediately.
Read more about Dunning here.