They give access for 7 days, but already on the third day, they charged 899 rubles. It was extremely difficult to cancel the subscription, and all this information is hidden. It's completely impossible to contact them. It feels like a pure scam. The presentation for which the teacher gave a three can be considered a success compared to this service. Everything is terrible, don't fall for it. It's a real rip-off. Money will be automatically deducted, and it seems like they are scammers. They are located in Omsk and ask for access to your card. Don't trust them; once you gain access, everything will be lost. Cancelling is a real problem, and the font is small and illegible. Getting a refund will be impossible.