Knowledgebase : Other > AceProof > Ordering and Registering
All our licences (except for AceProof 3) are lifetime and do not require any annual payments.
Yes, using AceProof requires a yearly subscription fee. Payments are taken automatically, unless explicitly blocked.
You can simply block your next payment. If you are unable to do so on your own, please contact our Customer Support and we will help you.