Withdrawal from the contract
If you bought an Appointa subscription or SMS package as a private person (a consumer), you may withdraw from the contract within 14 days of the purchase, without giving a reason. You meet the deadline if you send your statement before it ends.
For a subscription you pay a proportionate amount for the time until withdrawal, for an SMS package the credits used. We refund the rest to the card used for the payment within 14 days of receiving your statement at the latest. We confirm receipt of your statement by e-mail right away.
Companies and sole traders have no statutory right of withdrawal; the subscription cancellation rules apply to them.
If you can sign in, you can do the same in the app: Billing → Withdrawal from the contract.
All the rules are in section 8 of the Terms of Service.
You may also use the model withdrawal form (to print or e-mail), but you do not have to.