I know this for sure. Until recently - they even had phone support in common - then you just had to press different buttons to choose where to turn - 2 Leupay, 3 MyPoS, and 1 for icard (numbers for example. You do not think that I remember them?))).
To whom it belongs legally - it is difficult to say, I did not check. After we had the money stuck in Leupay - I would have twice thought whether to contact MyPoS.