You can't cancel and poor quality
If a company doesn't give permission to cancel subscription then be afraid of them. You can't see any contact information or option for cancel subscription. I am wasting time to cancel nowadays. This was first but very important reality. Secondly, the service is not useful for academic or serious work. The quality is really poor. If you are sure your text will not be read okey you can use and it will not be detected. But how? I tried and for the long text it put Korean letters :). I bought one month and remembered I canceled but now it tries to charge next month. I can't contact.