Is that a SCAM ?? at least it is not a serious service at all
I have scheduled a first lesson with a teacher online, he did not show up, I reported the situation and did not get any explanation. I rescheduled another time, with another teacher, 2 days later, and the same situation happenned again: NO SHOW from the teacher, no contact, no explanation... I make time in my schedule for those lessons, with all my good will, and you make me/us wait and loose my/our time. We can't even try the service you offer. How serious is that ?? Well, maybe the service doesn't even exist and that is a huge scam !!! Very disappointed.
And of course they charge you almost 300€ before you have time to try or cancel the service.
STAY AWAY.
I will report it to the consumer association and the BEUC.