apps.shopify.comは安全ですか？

Watch your credit card. Bought an app you would use once in your life to do the job. Nothing on the invoice or on the website says the app is a subscription. He hides it at the checkout in small print and collects money on your credit card untill your wife notices this repeating charge. Emailed about his deceptive scheme on an app that is a one time good product but being charged over and over again turns you right off. Has other good products but will not buy from a scammer. Like the free sample peole where you only pay shipping to findsd out in the fine print you signed up for a 6 month supply of the free product for ***** USD