Hopes and fears

Ive downloaded the app because the website promo said it would be a discount of 50RUB if buy via the mobile app. The price however was 400RUB (exactly the same as if i would buy the one-way ticket online). However, Ive tryed. Entered my bank card details and the system started to hang with such message wait, there is a data processing process. Ive waited. A lot. No progress. No ticket. Not sure if I would be charged.

Greenoble about Аэроэкспресс