Once I paid the first year of license, they auto-renew it without letting me know and automatically picked 417, 60€ via Paypal/bank account. There is no obvious way to cancel the renewal, the client has to send them a message to this end to an address hidden somewhere in the Teamviewer website. The apparently wrote the renewal was automatic every year in small hidden characters in the contract conditions when purchasing the first time. This is abuse/scam.