You can always upgrade to one of the paid subscriptions. The procedure is very simple and takes only two minutes, everything is done online.

To do this, follow the steps:

• Choose from the ‘Company profile’ or 'Billing and Subscription' main menu, then ‘online-billing-service.com Subscription’
• Choose your subscription type and payment interval
• Confirm your acceptance of the contract after reviewing it

or

You will receive a copy of the contract by e-mail. It enters into force immediately, so you will have instant access to the facilities offered by your chosen subscription.
The invoice will be issued automatically on the 15th of the month.