Hello mariavittoria avanzi
Welcome to the SBB Community.
No, we can’t check. The SBB Community is an online platform where SBB customers can exchange information and advice with each other. We are not the SBB Customer Service.
Make sure your credit card is supporting 3D secure ID, check with your bank.
If you have not received a ticket, and there is no purchase confirmation e-mail in your e-mail box, the purchase simply did not work. The fact that the amount appears on your statement does not mean, it was paid. It is a simple reservation, the payment has not been authorised yet.
Kind regards,
Roland