I've had some products purchased form them and then canceled my subscription. After this, the company has been non-stop emailing me about a subcription that I have and is currently out of stock. For a whole year.
I've contacted them multiple times only for them to tell me what I already know - I have no account with them and I have no subscriotions with them. Still, for a whole year and currently, they continue to email me with "Your Subscribe & Gain Item is Out of Stock" offering other products.
Every single time, I contact their support. By now, they simply close my tickets without even replying and... yes, continue to email me that spam. I've requested for them to delete my data, which they seem to ignore too as they continue to email me again and again.
Thus the 1 star, for a completely horrible view of their clients or ex-clients (they seem to be confused as to whether I have an account) and mishandling of user data, unsolicited spam, and GDPR breaches. Sadly, they are US-based so they don't seem to care about user-data legislation present in Europe.